It is my deliberate opinion that the one essential requisite of human welfare in all ways is scientific knowledge of human nature.

The sick-room becomes the scene of intense convictions; and among these, none, it seems to me, is more distinct and powerful than that of the permanent nature of good, and the transient nature of evil.

Men who pass most comfortably through this world are those who possess good digestions and hard hearts.

Fidelity to conscience is inconsistent with retiring modesty. If it be so, let the modesty succumb. It can be only a false modesty which can be thus endangered.

There is no theory of a God, of an author of Nature, of an origin of the Universe, which is not utterly repugnant to my faculties. . .

I am sure that no traveler seeing things through author spectacles can see them as they are.

it is a testament to the strength and purity of the democratic sentiment in the country, that the republic has not been overthrown by its newspapers.