Justus Sustermans. Public domain · Wikimedia Commons

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

All truths are easy to understand once they are discovered; the point is to discover them.
Galileo Galileiscience
You cannot teach a man anything; you can only help him find it within himself.
Galileo Galileiphilosophy
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
Galileo Galileiscience
Measure what is measurable, and make measurable what is not so.
Galileo Galileiscience
I have never met a man so ignorant that I couldn't learn something from him.
Galileo Galileiphilosophy

All truths are easy to understand once they are discovered; the point is to discover them.

You cannot teach a man anything; you can only help him find it within himself.

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.

Measure what is measurable, and make measurable what is not so.

I have never met a man so ignorant that I couldn't learn something from him.