The spirit of dogmatic theology poisons anything it touches.

It is vain to talk of the interest of the community, without understanding what is the interest of the individual.

The question is not, 'Can they reason?' nor, 'Can they talk?' but rather, 'Can they suffer?'

For the same sentiment of antipathy, if implicitly deferred to, may be, and very frequently is, productive of the very worst effects. Antipathy, therefore, can never be a right ground of action.

Unkind language is sure to produce the fruits of unkindness – that is, suffering in the bosom of others.

The addability of the happiness of different subjects is a postulum without which all political reasonings are at a stand.

O Logic: born gatekeeper to the Temple of Science, victim of capricious destiny: doomed hitherto to be the drudge of pedants: come to the aid of thy master, Legislation.

Nonsense on stilts.

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

The quantity of pleasure being equal, push-pin is as good as poetry.