No man can have society upon his own terms.

Each man has his own vocation; his talent is his call. There is one direction in which all space is open to him.

Enthusiasm is the engine of success.

When a man thinks happily, he finds no foot-track in the field he traverses. All spontaneous thought is irrespective of all else.

It is rare to find a man who believes in his own thoughts or speaks that which he is created to say. As nothing astonishes men so much as common sense and plain dealing, so nothing is more rare in any man than an act of his own...feel yourself, and be not daunted by things...The light by which we see this world comes out from the soul of the observer.

The cardinal virtue of a teacher [is] to protect the pupil from his own influence.

There is no thought in any mind, but it quickly tends to convert itself into power.