The greatest task before civilization at present is to make machines what they ought to be, the slaves, instead of the masters of men.

The mother is really a more immediate parent than the father because one is born from the mother, and the first experience of any infant is the mother.

Dancing is the loftiest, the most moving, the most beautiful of the arts, because it is no mere translation or abstraction from life; it is life itself.

We cannot be sure that we ought not to regard the most criminal country as that which in some aspects possesses the highest civilization.

There is a very intimate connection between hypnotic phenomena and religion.

We cannot remain consistent with the world save by growing inconsistent with our past selves.

The relation of the individual person to the species he belongs to is the most intimate of all relations.