Jealousy, that dragon which slays love under the pretence of keeping it alive.

It is only the great men who are truly obscene. If they had not dared to be obscene, they could never have dared to be great.

Dreams are real as long as they last. Can we say more of life?

The second great channel through which the impulse towards the control of procreation for the elevation of the race is entering into practical life is by the general adoption, by the educated—of methods for the prevention of conception except when conception is deliberately desired.

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

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

Beauty is the child of love.