If men and women are to understand each other, to enter into each other's nature with mutual sympathy, and to become capable of genuine comradeship, the foundation must be laid in youth.

The modesty of women, which, in its most primitive form among animals, is based on sexual periodicity, is, with that periodicity, an essential condition of courtship.

The family only represents one aspect, however important an aspect, of a human being's functions and activities. A life is beautiful and ideal or the reverse, only when we have taken into our consideration the social as well as the family relationship.

One can know nothing of giving aught that is worthy to give unless one also knows how to take.

A sublime faith in human imbecility has seldom led those who cherish it astray.

The by-product is sometimes more valuable than the product.

Heroes exterminate each other for the benefit of people who are not heroes.