I don't know a greater advantage, than to appreciate the worth of an enemy.

Be above it! Make the world serve your purpose, but do not serve it.

We who didn't inherit political power nor are made to acquire riches like nothing better than that which expands and solidifies the power of the spirit.

The person of analytic or critical intellect finds something ridiculous in everything. The person of synthetic or constructive intellect, in almost nothing.

You can easily judge the character of a man by how he treats those who can do nothing for him.

Nature! We are enveloped and embraced by her, incapable of emerging from her and incapable of entering her more deeply. Unbidden and unwarned, she receives us into the circuits of her dance, drifting onward with us herself, until we grow tired and drop from her arms.

Is it life, I ask, is it even prudence, To bore thyself and bore the students?