What else is it that should trace the insuperable line? Is it the faculty of reason or perhaps the faculty of discourse? But a full-grown horse or dog is beyond comparison a more rational, as well as more conversable animal, than an infant of a day or a week or even a month old. But suppose they were otherwise, what would it avail? The question is not, Can they reason?, nor Can they talk? but, Can they suffer? Why should the law refuse its protection to any sensitive being? The time will come when humanity will extend its mantle over everything which breathes.

Lawsuits generally originate with the obstinate and the ignorant, but they do not end with them; and that lawyer was right who left all his money to the support of an asylum for fools and lunatics, saying that from such he got it, and to such he would bequeath it.

The day may come when the rest of the animal creation may acquire those rights which never could have been withholden from them but by the hand of tyranny.

Those physical difficulties which you cannot account for, be very slow to arraign; for he that would be wiser than Nature would be wiser than God.

All poetry is misrepresentation.

All punishment is mischief; all punishment in itself is evil.

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.