To test a perfect theory with imperfect instruments did not impress the Greek philosophers as a valid way to gain knowledge.

No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.

Nonsense! The most hopelessly stupid man is he who is not aware that he is wise.

The facts, gentlemen, and nothing but the facts, for careful eyes are narrowly watching.

If knowledge can create problems, it is not through ignorance that we can solve them.

I have written 240 books on a wide variety of topics. . . . Some of it I based on education I received in my school, but most of it was backed by other ways of learning - chiefly in the books I obtained in the public library.

It seems to me, Golan, that the advance of civilization is nothing but an exercise in the limiting of privacy.