Money is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.

There is a very real evil consequent on ascribing supernatural origin to the received maxilms of morality. That origin consecrates the whole of them and protects them from being discussed or criticized.

A population may be too crowded, though all be amply supplied with food and raiment. It is not good for a man to be kept perforce at all times in the presence of his species.

The habit of analysis has a tendency to wear away the feelings.

...there ought to exist the fullest liberty of professing and discussing, as a matter of ethical conviction, any doctrine, however immoral it may be considered.

They who know how to employ opportunities will often find that they can create them; and what we can achieve depends less on the amount of time we possess than on the use we make of our time.

The moment one asks himself whether he is happy, he ceases to be so.