Nature is a mutable cloud which is always and never the same.

The good rain, like a bad preacher, does not know when to leave off.

Let us replace sentimentalism by realism, and dare to uncover those simple and terrible laws which, be they seen or unseen, pervade and govern.

The religion that is afraid of science dishonors God and commits suicide.

There is one topic peremptorily forbidden to all well-bred, to all rational mortals, namely, their distempers. If you have not slept, or if you have slept, or if you have headache, or sciatica, or leprosy, or thunderstroke, I beseech you, by all angels, to hold your peace, and not pollute the morning.

It is proof of high culture to say the greatest matters in the simplest way.

The State is our neighbors; our neighbors are the State.

All stealing is comparative. If you come to absolutes, pray who does not steal?

It is as easy for the strong man to be strong, as it is for the weak to be weak.

I pay the schoolmaster, but 'tis the schoolboys that educate my son.