Money is human happiness in the abstract; he, then, who is no longer capable of enjoying human happiness in the concrete devotes himself utterly to money.

The two enemies of human happiness are pain and boredom.

A man can be himself only so long as he is alone, and if he does not love solitude, he will not love freedom, for it is only when he is alone that he is really free.

Whitman was Emerson translated from the abstract into the concrete.

Happiness consists in frequent repetition of pleasure

Money alone is absolutely good, because it is not only a concrete satisfaction of one need in particular; it is an abstract satisfaction of all.