Such animals as be wants, he will nourish on the dregs and refuse of his own food, and give this as a gift; while those which are useless to him are … - Lewis Gompertz

Suppose...we reflect on the building of London Bridge, we cannot then help admiring the genius and assiduity of man. But could all the torture and destruction that this has caused to the poor horses, who drew the stones and cleared the rubbish, be brought to light, what an emblem of crime would this beautiful bridge exhibit; many years’ labour has it cost; many teams have been constantly at work, and the extreme severity of the labour imposed on them was almost at any time to be seen. Now, if all the strainings, the lashes, the blows, and the wrenchings with all the bits, had been kept account of, how immense would be the list...

It is strange that philosophers first show how one animal supports itself by destroying another, and then enter into discussions on the apparent admirable order of things in their present state. But though this may be a necessary contrivance, and the only way in which life can be supported, it can never be a beautiful one, in our short sights, notwithstanding that something worse might be, were this not the case.

Therefore it is plain that no particular thing can be made by a machine at all; neither an atom, or matter, which is the only identity of matter; nor the soul, which is the only identity of a person (and this applies also to every other animal or vegetable, as every thing, if it feels, must, it appears, have an identical self or soul, similar to that of any other being). No feeling can, it appears, be without reference to some self or soul)