The man with the greatest soul will always face the greatest war with the low minded person.

A country cannot simultaneously prepare and prevent war.

I believe that whoever tries to think things through honestly will soon recognize how unworthy and even fatal is the traditional bias against Negroes. What can the man of good will do to combat this deeply rooted prejudice? He must have the courage to set an example by words and deed, and must watch lest his children become influenced by racial bias.

There is, however, a somber point in the social outlook of Americans. Their sense of equality and human dignity is mainly limited to people of white skin.... The more I feel like an American, the more the situation pains me.

A mathematical equation stands forever.

The most important method of education always has consisted of that in which the pupil was urged to actual performance.

Curiosity is a delicate little plant that, aside from stimulation, stands mainly in need of freedom.