The weakest of all weak things is a virtue that has not been tested in the fire.

It's easy to make friends, but hard to get rid of them.

We have not the reverent feeling for the rainbow that the savage has, because we know how it is made. We have lost as much as we gained by prying into that matter.

Don't wrestle with pigs. You both get dirty and the pig likes it.

But it was ever thus, all through my life: whenever I have diverged from custom and principle and uttered a truth, the rule has been that the hearer hadn't strength of mind enough to believe it.

You may say a cat uses good grammar. Well, a cat does -- but you let a cat get excited once; you let a cat get to pulling fur with another cat on a shed, nights, and you'll hear grammar that will give you the lockjaw. Ignorant people think it's the noise which fighting cats make that is so aggravating, but it ain't so; it's the sickening grammar they use.

Not until you become a stranger to yourself will you be able to make acquaintance with the Friend.