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

It belongs to the self-respect of intellect to pursue every tangle of thought to its final unravelment.

From the very beginning of his education, the child should experience the joy of discovery.

Not ignorance, but ignorance of ignorance, is the death of knowledge.

No reason can be given for the nature of God, because that nature is the ground of rationality.

The foundation of reverence is this perception, that the present holds within itself the complete sum of existence, backwards and forwards, that whole amplitude of time, which is eternity.

No period of history has ever been great or ever can be that does not act on some sort of high, idealistic motives, and idealism in our time has been shoved aside, and we are paying the penalty for it.