The total absence of humor from the Bible is one of the most singular things in all literature.

The deepest definition of youth is life as yet untouched by tragedy.

The vigor of civilized societies is preserved by the widespread sense that high aims are worth-while.

Fundamental progress has to do with the reinterpretation of basic ideas.

Life is the enjoyment of emotion, derived from the past and aimed at the future.

The way in which the persecution of Galileo has been remembered is a tribute to the quiet commencement of the most intimate change in outlook which the human race had yet encountered. Since a babe was born in a manger, it may be doubted whether so great a thing has happened with so little stir

Some of the finest moral intuitions come to quite humble people. The visiting of lofty ideas doesn't depend on formal schooling.