A man must not swallow more beliefs than he can digest.

To live remains an art which everyone must learn, and which no one can teach.

In philosophy, it is not the attainment of the goal that matters, it is the things that are met with by the way

Socialism also brings us up against the hard rock of eugenic fact which, if we neglect it, will dash our most beautiful social construction to fragments.

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

Thinking in its lower grades, is comparable to paper money, and in its higher forms it is a kind of poetry.

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.