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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?
… [Slave] trade … is the most shocking violation of the law of nature, has a direct tendency to diminish … liberty, and makes every dealer in it a tyrant, from the director of an African company to the petty chapman [peddler]…. It is a clear truth, that those who every day barter away other men's liberty will soon care little for their own.
The elephant, not only the largest but the most intelligent of animals, provides us with an excellent example. It is faithful and tenderly loving to the female of its choice, mating only every third year and then for no more than five days, and so secretly as never to be seen, until, on the sixth day, it appears and goes at once to wash its whole body in the river, unwilling to return to the herd until thus purified. Such good and modest habits are an example to husband and wife.