"The day may come when the rest of the animal creation may acquire those rights which never could have been witholden from them but by the hand of tyranny. [...] A full-grown horse or dog, is beyond comparison a more rational, as well as a more conversable animal, than an infant of a day or a week or even a month, old. But suppose the case were otherwise, what would it avail? The question is not, Can they reason?, nor Can they talk? but, Can they suffer?"