Man is not logical and his intellectual history is a record of mental reserves and compromises. He hangs on to what he can in his old beliefs even when he is compelled to surrender their logical basis.

Nature is the mother and the habitat of man, even if sometimes a stepmother and an unfriendly home.

Every great advance in science has issued from a new audacity of imagination.

Education is not preparation for life education is life itself.

No man's credit is as good as his money.