It is easy to live for others, everybody does. I call on you to live for yourself.

To a physician, each man, each woman, is an amplification of one organ.

It is very certain that the strong British race which has now overrun much of this continent, must also overrun [Texas], and Mexico and Oregon also, and it will in the course of ages be of small import by what particular occasions and methods it was done.

The essence of friendship is entireness, a total magnanimity and trust.

The world is nothing, the man is all; in yourself is the law of all nature, and you know not yet how a globule of sap ascends; in yourself slumbers the whole of Reason; it is for you to know all, it is for you to dare all.

The great man is not convulsible or tormentable; events pass over him without much impression.

Every man has a vocation. The talent is the call.