The question is not, can they reason? Nor, can they talk? But, can they suffer?

Stretching his hand up to reach the stars, too often man forgets the flowers at his feet.

Nature has placed mankind under the governance of two sovereign masters, pain and pleasure. It is for them alone to point out what we ought to do, as well as to determine what we shall do.

As to the evil which results from a censorship, it is impossible to measure it, for it is impossible to tell where it ends.

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

The greatest happiness of the greatest number is the foundation of morals and legislation.