For us the great men are not those who solved the problems, but those whodiscovered them.

Mysticism occurs whenever a human being sees the separation between the natural and the supernatural, between the temporal and the eternal, as overcome.

Ethics is the activity of man directed to secure the inner perfection of his own personality.

Not one of us knows what effect his life produces, and what he gives to others; that is hidden from us and must remain so, though we are often allowed to see some little fraction of it, so that we may not lose courage.

The interior joy we feel when we have done a good deed is the nourishment the soul requires.

Soldiers' graves are the greatest preachers of peace.

The last fact which knowledge can discover is that the world is a manifestation, and in every way a puzzling manifestation, of the universal will to live.