To know that we know what we know, and that we do not know w... - Galileo Galilei

This quote is attributed to Galileo Galilei.

"To know that we know what we know, and that we do not know what we do not know, is true knowledge."

Galileo Galilei Wisdom

Astronomer and Physicist Italian 1564–1642

More from Galileo Galilei

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

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

"We cannot teach people anything; we can only help them discover it within themselves."

"Mathematics is the language in which God has written the universe."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."