We all belong to the nasty stinking little human race, & of course it is not nice for God's beloved vermin to scoff at each other... Oh, we are a nasty little lot-& to think there are people who would like to save us & continue us. It won't happen if I have any influence.

He said that man’s heart was the only bad heart in the animal kingdom; that man was the only animal capable of feeling malice, envy, vindictiveness, revengefulness, hatred, selfishness, the only animal that loves drunkenness, almost the only animal that could endure personal uncleanliness and a filthy habitation, the sole animal in whom was fully developed the base instinct called patriotism, the sole animal that robs, persecutes, oppresses and kills members of his own tribe, the sole animal that steals and enslaves the members of any tribe.

One of the proofs of the immortality of the soul is that myriads have believed it. They also believed the world was flat.

There's a good spot tucked away somewhere in everybody. You'll be a long time finding it, sometimes.

A powerful agent is the right word: it lights the reader's way and makes it plain.

It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.

Citizenship is what makes a republic - monarchies can get along without it.