16. “Pure mathematics is, in its way, the poetry of logical ideas.”

17. “Nature shows us only the tail of the lion. But I do not doubt that the lion belongs to it even though he cannot at once reveal himself because of his enormous size.”

18. “Only a life lived for others is a life worthwhile.”

19. “It’s not that I’m so smart, it’s just that I stay with problems longer.”

20. “My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.”
21. “Peace cannot be kept by force. It can only be achieved by understanding.”

22. “I never think of the future. It comes soon enough.”

23. “Do not worry about your difficulties in mathematics, I can assure you that mine are all greater”

24. “In order to form an immaculate member of a flock of sheep one must, above all, be a sheep.”

25. “The most incomprehensible thing about the world is that it is comprehensible.”