There comes a point in your life when you need to stop reading other people's books and write your own.

Great spirits have always encountered opposition from mediocre minds. The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly.

Fraulein Noether was the most significant creative mathematical genius thus far produced since the higher education of women began.

Games are the most elevated form of investigation.

An empty stomach is not a good political adviser.

If this being is omnipotent, then every occurrence, including every human action, every human thought, and every human feeling and aspiration is also His work; how is it possible to think of holding men responsible for their deeds and thoughts before such an almighty Being? In giving out punishment and rewards He would to a certain extent be passing judgment on Himself. How can this be combined with the goodness and righteousness ascribed to Him?

Thinking is hard work; that's why so few do it.