Innovation is not the product of logical thought, even though the final product is tied to a logical structure.

A forced faithfulness is a bitter fruit for all concerned.

I do not believe in the God of theology who rewards good and punishes evil. My God created laws that take care of that. His universe is not ruled by wishful thinking, but by immutable laws.

I speak to everyone in the same way, whether he is the garbage man or the president of the university.

A happy man is too satisfied with the present to dwell too much on the future.

Regarding sex education: no secrets!

Man owes his strength in the struggle for existence to the fact that he is a social animal.