It is good to be helpful and kindly, but don't give yourself to be melted into candle grease for the benefit of the tallow trade.

The responsibility of tolerance lies with those who have the wider vision.

Our vanities differ as our noses do: all conceit is not the same conceit, but varies in correspondence with the minutiae of mental make in which one of us differs from another.

Of what use, however, is a general certainty that an insect will not walk with his head hindmost, when what you need to know is the play of inward stimulus that sends him hither and thither in a network of possible paths?

...Though there's reasons in things as nobody knows on---- that's pretty much what I've made out; yet some folks are so wise they'll find you fifty reasons straight off, and all the while the real reason's winking at 'em in the corner, and they niver see't.

Cruelty, like every other vice, requires no motive outside of itself; it only requires opportunity.

... the fallibility of human brains is in nothing more obvious than in proof reading.