Sources
People and sacred texts quoted here, from Marcus Aurelius to the Bible and the Bhagavad Gita.
Texts
Authors
Aaron Beck
American psychiatrist who developed cognitive therapy in the 1960s. Founded the Beck Institute and died in 2021 at age 100.
3 quotes
Abraham Maslow
American psychologist best known for the hierarchy of needs (1943). Taught at Brooklyn College and Brandeis until his death in 1970.
4 quotes
Adyashanti
American spiritual teacher born Steven Gray in 1962. Known for nondual teachings after years of Zen practice.
5 quotes
Albert Camus
French-Algerian writer and philosopher; Nobel Prize in Literature, 1957. Author of The Stranger and The Myth of Sisyphus; died in 1960.
10 quotes
Albert Einstein
German-born theoretical physicist who developed special and general relativity. Nobel Prize in Physics, 1921; died in Princeton in 1955.
20 quotes
Albert Ellis
American psychologist who created rational emotive behavior therapy (REBT) in the 1950s. Founded the Albert Ellis Institute in New York.
3 quotes
Alexander von Humboldt
Prussian naturalist and explorer who mapped Latin America with Aimé Bonpland (1799–1804). His Kosmos (1845–1862) popularized science across Europe.
1 quote
Alfred Adler
Austrian psychiatrist and a founder of the Vienna Psychoanalytic Society before breaking with Freud. Developed individual psychology and the concept of inferiority striving.
4 quotes
Anonymous
Traditional or unknown attribution. Many proverbial lines circulate without a documented single author.
1 quote
Aristotle
Greek philosopher and student of Plato who tutored Alexander the Great. Founded the Lyceum in Athens; lived c. 384–322 BCE.
10 quotes
Arthur C. Clarke
British science-fiction writer and futurist, co-author of 2001: A Space Odyssey. Predicted communications satellites in a 1945 paper.
3 quotes
Auguste Rodin
French sculptor whose works include The Thinker and The Gates of Hell. Died in 1917; his studio became the Musée Rodin in Paris.
2 quotes
Augustine of Hippo
North African bishop and theologian; author of Confessions and City of God. One of the most influential figures in Western Christianity (354–430).
1 quote
B.F. Skinner
American psychologist who developed operant conditioning and radical behaviorism. Published Walden Two (1948) and taught at Harvard for decades.
2 quotes
Benjamin Franklin
American polymath, Founding Father, and inventor of the lightning rod and bifocals. Signed the Declaration of Independence and served as U.S. minister to France.
4 quotes
Bessel van der Kolk
Dutch-born psychiatrist and trauma researcher. Author of The Body Keeps the Score (2014) and founder of the Trauma Research Foundation.
3 quotes
Brené Brown
American research professor at the University of Houston who studies shame, vulnerability, and courage. Her 2010 TED talk on vulnerability has hundreds of millions of views.
10 quotes
Buddha
Siddhartha Gautama, a teacher in ancient India whose followers founded Buddhism. Traditionally placed c. 563–483 BCE in the Gangetic plain.
8 quotes
Carl Jung
Swiss psychiatrist who founded analytical psychology and introduced concepts such as the collective unconscious and archetypes. Collaborated with Freud before their split in 1913.
9 quotes
Carl Rogers
American psychologist who developed client-centered (person-centered) therapy. Published On Becoming a Person (1961) and received the APA Distinguished Scientific Contribution Award.
7 quotes
Carl Sagan
American astronomer and science communicator who co-produced the Cosmos television series (1980). Published more than 600 scientific papers and popular books on planetary science.
16 quotes
Carol Dweck
American psychologist at Stanford University known for research on fixed versus growth mindsets. Author of Mindset: The New Psychology of Success (2006).
3 quotes
Caroline Myss
American author and speaker on energy medicine and mysticism. Wrote Anatomy of the Spirit (1996) and Sacred Contracts (2001).
1 quote
Charles Darwin
English naturalist who proposed evolution by natural selection in On the Origin of Species (1859). Conducted fieldwork on the HMS Beagle voyage (1831–1836).
2 quotes
Claude Debussy
French composer associated with musical Impressionism; works include Clair de Lune and Prélude à l'après-midi d'un faune. Lived 1862–1918.
4 quotes
Confucius
Chinese teacher and philosopher whose Analects shaped East Asian ethics and governance. Traditionally dated c. 551–479 BCE in Lu (Shandong).
6 quotes
Corrie ten Boom
Dutch watchmaker who hid Jews during the Nazi occupation and was sent to Ravensbrück concentration camp. Wrote The Hiding Place (1971); died in 1983.
6 quotes
Dalai Lama
Title held by the spiritual leader of Tibetan Buddhism; Tenzin Gyatso has held the office since 1940. Nobel Peace Prize, 1989.
1 quote
Daniel Siegel
American psychiatrist and founding co-director of the UCLA Mindful Awareness Research Center. Author of The Developing Mind and Mindsight.
1 quote
David Burns
American psychiatrist who popularized cognitive behavioral techniques in Feeling Good (1980). Adjunct clinical professor emeritus at Stanford University School of Medicine.
4 quotes
Desmond Tutu
South African Anglican archbishop and anti-apartheid leader. Nobel Peace Prize, 1984; chaired South Africa's Truth and Reconciliation Commission.
1 quote
Dietrich Bonhoeffer
German Lutheran pastor and theologian who resisted the Nazi regime. Executed at Flossenbürg concentration camp in April 1945 at age 39.
1 quote
Dorothy Parker
American writer and critic known for sharp wit in The New Yorker and the Algonquin Round Table circle. Published Enough Rope (1926); died in 1967.
12 quotes
Douglas Adams
British author of The Hitchhiker's Guide to the Galaxy (1979). Also wrote for Doctor Who and campaigned for endangered species until his death in 2001.
10 quotes
E.O. Wilson
American biologist who pioneered sociobiology and biodiversity studies. Two-time Pulitzer Prize winner; author of Sociobiology (1975) and Half-Earth (2016).
3 quotes
Eckhart Tolle
German-born spiritual teacher and author of The Power of Now (1997). His books have sold millions of copies worldwide.
13 quotes
Elbert Hubbard
American writer and founder of the Roycroft artisan community in East Aurora, New York. Wrote A Message to Garcia (1899); died aboard the Lusitania in 1915.
1 quote
Emily Dickinson
American poet who lived largely in seclusion in Amherst, Massachusetts. About 1,800 poems were published posthumously; lived 1830–1886.
3 quotes
Epictetus
Stoic philosopher born a slave in Hierapolis who taught in Nicopolis after gaining freedom. His Discourses were recorded by his student Arrian; lived c. 50–135 CE.
12 quotes
Epicurus
Greek philosopher who taught that pleasure—understood as freedom from pain and fear—is the highest good. Founded a school in Athens called the Garden; lived 341–270 BCE.
1 quote
Erich Fromm
German social psychologist and psychoanalyst who emigrated to the United States in 1933. Author of Escape from Freedom (1941) and The Art of Loving (1956).
3 quotes
Erik Erikson
German-American developmental psychologist known for the eight-stage model of psychosocial development. Published Childhood and Society (1950).
2 quotes
Erma Bombeck
American humorist whose syndicated column At Wit's End ran from 1965 to 1996. Author of The Grass Is Always Greener over the Septic Tank (1976).
15 quotes
Ernest Hemingway
American novelist and Nobel Prize in Literature laureate (1954). Wrote The Sun Also Rises, A Farewell to Arms, and The Old Man and the Sea; lived 1899–1961.
5 quotes
Francis of Assisi
Italian friar who founded the Franciscan order and is patron saint of animals and ecology. Canonized in 1228; lived c. 1181–1226.
1 quote
Frédéric Chopin
Polish-French Romantic composer and virtuoso pianist. Major works include nocturnes, preludes, and piano concertos; lived 1810–1849.
2 quotes
Frida Kahlo
Mexican painter known for self-portraits exploring identity, pain, and Mexican folk culture. Married Diego Rivera; lived 1907–1954.
4 quotes
Friedrich Nietzsche
German philosopher who wrote Thus Spoke Zarathustra and Beyond Good and Evil. Critiqued Christianity and traditional morality; lived 1844–1900.
11 quotes
Gabor Maté
Hungarian-Canadian physician specializing in addiction, trauma, and childhood development. Author of In the Realm of Hungry Ghosts (2008).
4 quotes
Galileo Galilei
Italian astronomer who used the telescope to support heliocentrism and wrote Dialogue Concerning the Two Chief World Systems (1632). Placed under house arrest by the Inquisition; lived 1564–1642.
5 quotes
George Orwell
British writer born Eric Blair; author of Nineteen Eighty-Four and Animal Farm. Served in the Spanish Civil War and worked for the BBC during World War II.
3 quotes
Georgia O'Keeffe
American modernist painter known for large-scale flowers and New Mexico landscapes. Married photographer Alfred Stieglitz; lived 1887–1986.
4 quotes
Groucho Marx
American comedian and film star, the bespectacled Marx Brother. Hosted the quiz show You Bet Your Life on radio and television; lived 1890–1977.
8 quotes
Hafiz
Persian lyric poet (Khwāja Shams al-Dīn Muḥammad Ḥāfiẓ), widely read in Iran and the Persianate world. Traditionally dated c. 1315–1390 in Shiraz.
7 quotes
Henri Matisse
French painter and sculptor, leading figure of Fauvism. Known for bold color and later paper cut-outs; lived 1869–1954.
4 quotes
Igor Stravinsky
Russian-born composer whose ballets include The Firebird, Petrushka, and The Rite of Spring (1913). Became a U.S. citizen in 1945; lived 1882–1971.
3 quotes
Irvin Yalom
American existential psychiatrist and emeritus professor at Stanford University. Author of Love's Executioner (1989) and the novel When Nietzsche Wept (1992).
6 quotes
Isaac Asimov
American writer and biochemist who published hundreds of books including the Foundation and Robot series. Served as vice president of Mensa; lived 1920–1992.
5 quotes
Isaac Newton
English mathematician and physicist who formulated the laws of motion and universal gravitation in Principia (1687). Master of the Royal Mint; lived 1643–1727.
3 quotes
Isadora Duncan
American dancer who pioneered modern dance in Europe in the early 1900s. Known for free, expressive movement; died in a scarf accident in 1927.
1 quote
Jack Kornfield
American Buddhist teacher and co-founder of Spirit Rock Meditation Center in California. Author of A Path with Heart (1993).
8 quotes
James Baldwin
American novelist and essayist whose works include Go Tell It on the Mountain (1953) and The Fire Next Time (1963). A leading voice on race and sexuality; lived 1924–1987.
3 quotes
Jane Austen
English novelist who wrote Pride and Prejudice, Sense and Sensibility, and Emma. Published anonymously during her lifetime; lived 1775–1817.
1 quote
Jane Goodall
British primatologist who studied wild chimpanzees at Gombe Stream, Tanzania, from 1960. UN Messenger of Peace and founder of the Jane Goodall Institute.
5 quotes
Jean Piaget
Swiss developmental psychologist who mapped stages of cognitive development in children. Director of the International Bureau of Education; lived 1896–1980.
2 quotes
John Cage
American composer who wrote 4′33″ (1952) and pioneered prepared-piano works and chance operations. Collaborated with Merce Cunningham; lived 1912–1992.
1 quote
John Keats
English Romantic poet who wrote Ode to a Nightingale and Ode on a Grecian Urn. Died of tuberculosis in Rome in 1821 at age 25.
2 quotes
Julian of Norwich
English anchoress and mystic who wrote Revelations of Divine Love, the earliest surviving book in English by a woman. Active c. 1373–1416 in Norwich.
1 quote
Karen Horney
German-American psychoanalyst who challenged Freudian orthodoxy and developed a theory of neurosis rooted in social conditions. Founded the American Institute for Psychoanalysis in 1941.
4 quotes
Khalil Gibran
Lebanese-American poet and artist, author of The Prophet (1923). Born in Bsharri, Ottoman Syria; lived 1883–1931.
7 quotes
Kristin Neff
American psychologist at the University of Texas at Austin who co-developed the Self-Compassion Scale. Author of Self-Compassion: The Proven Power of Being Kind to Yourself (2011).
5 quotes
Lao Tzu
Legendary Chinese sage traditionally credited with the Tao Te Ching. Often placed in the 6th century BCE as a contemporary of Confucius.
18 quotes
Leonard Cohen
Canadian singer-songwriter and poet who wrote Hallelujah and Suzanne. Published novels and poetry alongside fourteen studio albums; lived 1934–2016.
3 quotes
Leonardo da Vinci
Italian Renaissance artist and inventor; painted the Mona Lisa and The Last Supper. Left thousands of notebook pages on anatomy, engineering, and flight; lived 1452–1519.
4 quotes
Louis Pasteur
French chemist and microbiologist who developed pasteurization and vaccines for rabies and anthrax. Founded the Pasteur Institute in 1887; lived 1822–1895.
3 quotes
Ludwig van Beethoven
German composer who bridged Classical and Romantic music; wrote nine symphonies and the Moonlight Sonata. Increasingly deaf from his late twenties; lived 1770–1827.
5 quotes
Ludwig Wittgenstein
Austrian-British philosopher who wrote Tractatus Logico-Philosophicus and Philosophical Investigations. Taught at Cambridge; lived 1889–1951.
3 quotes
Marcus Aurelius
Roman emperor (161–180 CE) and Stoic philosopher; author of Meditations. Last of the Five Good Emperors; lived 121–180.
13 quotes
Margaret Atwood
Canadian novelist and poet, author of The Handmaid's Tale (1985) and The Testaments. Booker Prize winner and Officer of the Order of Canada.
4 quotes
Marie Curie
Polish-French physicist and chemist; first person to win Nobel Prizes in two sciences (1903, 1911). Discovered polonium and radium with Pierre Curie; lived 1867–1934.
9 quotes
Mark Twain
American writer born Samuel Clemens; author of The Adventures of Tom Sawyer and Adventures of Huckleberry Finn. Lectured widely and invested in the Paige typesetter; lived 1835–1910.
19 quotes
Marsha Linehan
American psychologist who developed dialectical behavior therapy (DBT) in the late 1980s. Professor emerita at the University of Washington.
3 quotes
Martin Luther King Jr.
American Baptist minister and civil rights leader; delivered the I Have a Dream speech in 1963. Nobel Peace Prize, 1964; assassinated in Memphis in 1968.
9 quotes
Maya Angelou
American poet and memoirist, author of I Know Why the Caged Bird Sings (1969). Recited On the Pulse of Morning at President Clinton's 1993 inauguration; lived 1928–2014.
5 quotes
Michael Faraday
English scientist who discovered electromagnetic induction and built the first electric motor and generator. Faraday's laws underpin modern electrochemistry; lived 1791–1867.
1 quote
Michael Scott (The Office)
Fictional regional manager of Dunder Mifflin's Scranton branch in the U.S. TV series The Office (2005–2013), played by Steve Carell.
1 quote
Michelangelo
Italian Renaissance sculptor and painter who created the David and the Sistine Chapel ceiling. Also designed St. Peter's Basilica dome; lived 1475–1564.
4 quotes
Mihaly Csikszentmihalyi
Hungarian-American psychologist who named and studied the state of flow. Claremont Graduate University professor; author of Flow: The Psychology of Optimal Experience (1990).
2 quotes
Mitch Hedberg
American stand-up comedian known for deadpan one-liners and surreal observations. Released Strategic Grill Locations (1999); died in 2005 at age 37.
3 quotes
Mooji
Jamaican-born spiritual teacher (Anthony Paul Moo-Young) in the advaita vedanta tradition. Leads retreats at Monte Sahaja in Portugal.
5 quotes
Mother Teresa
Albanian-Indian nun who founded the Missionaries of Charity in Kolkata in 1950. Nobel Peace Prize, 1979; canonized as Saint Teresa of Calcutta in 2016.
2 quotes
Neil deGrasse Tyson
American astrophysicist and director of the Hayden Planetarium in New York. Hosted the Cosmos: A Spacetime Odyssey television series (2014).
8 quotes
Niels Bohr
Danish physicist who proposed the Bohr model of the atom and helped found quantum mechanics. Nobel Prize in Physics, 1922; lived 1885–1962.
2 quotes
Ogden Nash
American poet known for light verse and unconventional rhyme in The New Yorker. Published more than twenty collections; lived 1902–1971.
15 quotes
Oscar Wilde
Irish playwright and novelist who wrote The Importance of Being Earnest and The Picture of Dorian Gray. Imprisoned for gross indecency in 1895; lived 1854–1900.
3 quotes
P. G. Wodehouse
English humorist who created Jeeves and Bertie Wooster. Wrote nearly a hundred books; lived mostly in the United States after 1947; died in 1975.
1 quote
Pablo Neruda
Chilean poet and diplomat; Nobel Prize in Literature, 1971. Author of Twenty Love Poems and a Song of Despair (1924); lived 1904–1973.
6 quotes
Pablo Picasso
Spanish painter and sculptor who co-founded Cubism with Georges Braque. Painted Guernica (1937); lived 1881–1973.
9 quotes
Paramahamsa Vishwananda
Born 13 June 1978 in Beau Bassin-Rose Hill, Mauritius. Founded the bhakti-yoga organisation Bhakti Marga in 2005; main ashram in Springen, Germany.
6 quotes
Paramahansa Yogananda
Indian yogi who brought Kriya Yoga to the West and founded Self-Realization Fellowship in 1920. Author of Autobiography of a Yogi (1946); lived 1893–1952.
6 quotes
Pema Chödrön
American Tibetan Buddhist nun and teacher in the Shambhala lineage. Author of When Things Fall Apart (1996) and abbot of Gampo Abbey in Nova Scotia.
13 quotes
Persian/Sufi proverb
Traditional saying from Persian or Sufi oral and literary culture. Often circulated without a single attributed author.
1 quote
Peter Levine
American psychologist who developed Somatic Experiencing for trauma. Author of Waking the Tiger (1997) and founder of the Somatic Experiencing Trauma Institute.
2 quotes
Plato
Greek philosopher and student of Socrates who founded the Academy in Athens. Wrote dialogues including The Republic; lived c. 428–348 BCE.
3 quotes
Rachel Carson
American marine biologist and author of Silent Spring (1962), which documented pesticide harm to wildlife. U.S. Presidential Medal of Freedom, 1980 (posthumous); lived 1907–1964.
3 quotes
Rainer Maria Rilke
Bohemian-Austrian poet who wrote the Duino Elegies and Letters to a Young Poet. Worked briefly as Rodin's secretary; lived 1875–1926.
12 quotes
Ram Dass
American spiritual teacher born Richard Alpert; co-author of Be Here Now (1971). Harvard psychologist turned Hindu devotee of Neem Karoli Baba; lived 1931–2019.
10 quotes
Richard Feynman
American theoretical physicist who shared the 1965 Nobel Prize for quantum electrodynamics. Member of the Manhattan Project and author of Surely You're Joking, Mr. Feynman!
12 quotes
Robert Frost
American poet who read The Gift Outright at John F. Kennedy's 1961 inauguration. Four-time Pulitzer Prize winner; lived 1874–1963.
3 quotes
Rodney Dangerfield
American comedian famous for the catchphrase I don't get no respect. Starred in Caddyshack (1980) and Back to School (1986); lived 1921–2004.
1 quote
Rollo May
American existential psychologist and author of Love and Will (1969). Co-founded the Saybrook Graduate School and served as a practicing psychotherapist.
3 quotes
Rosalind Franklin
British chemist whose X-ray diffraction Photo 51 was critical to determining DNA's structure. Also researched coal and viruses; lived 1920–1958.
1 quote
Rumi
Persian poet and Sufi mystic (Jalāl al-Dīn Muḥammad Rūmī) who founded the Mevlevi order. Author of the Masnavi; lived 1207–1273 in Konya.
23 quotes
Seneca
Roman Stoic philosopher, adviser to Emperor Nero, and author of Letters to Lucilius. Forced to commit suicide after the Pisonian conspiracy; lived c. 4 BCE–65 CE.
13 quotes
Socrates
Athenian philosopher who taught through dialogue and was sentenced to death for impiety in 399 BCE. Known mainly through Plato's writings; lived c. 470–399 BCE.
6 quotes
Søren Kierkegaard
Danish philosopher and theologian, a founder of existentialist thought. Wrote Fear and Trembling and Either/Or; lived 1813–1855.
10 quotes
Stephen Hawking
British theoretical physicist who studied black holes and cosmology despite ALS. Author of A Brief History of Time (1988); lived 1942–2018.
9 quotes
Steven Wright
American stand-up comedian known for absurdist one-liners and deadpan delivery. Grammy Award for I Have a Pony (1985).
4 quotes
T. S. Eliot
American-born poet and critic who wrote The Waste Land and Four Quartets. Nobel Prize in Literature, 1948; lived 1888–1965.
3 quotes
Teresa of Avila
Spanish Carmelite nun, mystic, and reformer of the Carmelite order. Author of The Interior Castle; canonized in 1622; lived 1515–1582.
2 quotes
Thich Nhat Hanh
Vietnamese Zen monk who founded Plum Village in France and promoted engaged Buddhism. Nominated for the Nobel Peace Prize by Martin Luther King Jr.; lived 1926–2022.
15 quotes
Thomas Merton
American Trappist monk and writer at the Abbey of Gethsemani, Kentucky. Author of The Seven Storey Mountain (1948); died in Bangkok in 1968.
5 quotes
Tommy Cooper
British comedian and magician known for feigned mishaps during tricks. Starred on television from the 1940s until his on-stage death in 1984.
11 quotes
Toni Morrison
American novelist who wrote Beloved (1987), Song of Solomon, and The Bluest Eye. Nobel Prize in Literature, 1993; lived 1931–2019.
3 quotes
Viktor Frankl
Austrian psychiatrist and Holocaust survivor who founded logotherapy. Author of Man's Search for Meaning (1946); lived 1905–1997.
9 quotes
Vincent van Gogh
Dutch Post-Impressionist painter who created Starry Night and Sunflowers. Produced roughly 2,100 artworks; lived 1853–1890.
7 quotes
Virginia Woolf
English modernist writer who authored Mrs Dalloway, To the Lighthouse, and A Room of One's Own. A central figure in the Bloomsbury Group; lived 1882–1941.
4 quotes
W. C. Fields
American comedian and actor known for misanthropic humor in vaudeville and film. Starred in It's a Gift (1934) and My Little Chickadee (1940); lived 1880–1946.
6 quotes
Walt Whitman
American poet who published Leaves of Grass, revised through multiple editions from 1855. Served as a Civil War hospital volunteer; lived 1819–1892.
1 quote
Wassily Kandinsky
Russian painter and art theorist credited with one of the first purely abstract works. Taught at the Bauhaus; lived 1866–1944.
2 quotes
Werner Heisenberg
German physicist who formulated the uncertainty principle and won the 1932 Nobel Prize in Physics. Led Germany's nuclear research program during World War II.
1 quote
Will Rogers
American humorist, actor, and columnist who performed lariat tricks and political commentary. Died in a plane crash with Wiley Post in 1935.
12 quotes
William James
American philosopher and psychologist who wrote The Principles of Psychology (1890) and The Varieties of Religious Experience. Brother of novelist Henry James; lived 1842–1910.
9 quotes
Wolfgang Amadeus Mozart
Austrian composer who wrote more than 600 works including operas The Magic Flute and Don Giovanni. Child prodigy; lived 1756–1791.
1 quote