Is it possible for a man to move the earth? Yes; but he must first find out another earth to stand upon.

I don't care whether animals are capable of thinking; all I care about is that they are capable of suffering!

...the rarest of all human qualities is consistency.

Pleasure is in itself a good; nay, even setting aside immunity from pain, the only good.

Happiness is a very pretty thing to feel, but very dry to talk about.

Create all the happiness you are able to create; remove all the misery you are able to remove. Every day will allow you, --will invite you to add something to the pleasure of others, --or to diminish something of their pains.

The principle of asceticism never was, nor ever can be, consistently pursued by any living creature. Let but one tenth part of the inhabitants of the earth pursue it consistently, and in a day's time they will have turned it into a Hell.