He who does not contemplate the future is destined to be overwhelmed by it.

We must be prepared to see an Association of Nations in conference growing into an organic system of world controls for world affairs and the keeping of the world’s peace, or we must be prepared for – a continuation of war.

Cynicism is humor in ill health.

No passion in the world is equal to the passion to alter someone else's draft.

Alexander the Great changed a few boundaries and killed a few men. Both he and Napoleon were forced into fame by circumstances outside of themselves and by currents of the time, but Margaret Sanger made currents and circumstances. When the history of our civilization is written, it will be a biological history and Margaret Sanger will be its heroine.

The brain upon which my experiences have been written is not a particularly good one. If their were brain-shows, as there are cat and dog shows, I doubt if it would get even a third class prize.

One of the darkest evils of our world is surely the unteachable wildness of the Good.