‘And as the mind frames to itself abstract ideas of qualities, or modes, so does it by the precision or mental separation, attain abstract ideas of the more compound beings, which include several co-existent qualities:—for example, the mind having observed, that Peter, James, John, &c., resemble each other in certain common agreements of shape, and other qualities, leaves out of the complex or compounded idea it has of Peter, James, &c., that which is peculiar to each, retaining only what is common to all; and so makes an abstract idea wherein the particulars equally partake, abstracting entirely, and cutting off all those circumstances and differences which might determine it, to any particular existence. And after this manner it is said, we come by the abstract idea of man, or if you please humanity, or human nature; ’tis true, there is included colour, because there is no man but has some colour, but then it can be neither white nor black, nor any particular colour, because there is no one particular colour, wherein all men partake; so there is included stature, but then it is neither tall stature, nor low stature, nor yet middle stature, but something abstracted from all these; and so of the rest. Moreover, there being a great variety of other creatures that partake in some parts, not all, of the complex idea, man, the mind leaving out those parts which are peculiar to men, and retaining those only which are common to all living creatures, frames the idea of animals, which abstracts not only from all particular men, but also, all birds, beasts, fishes, and insects. By _Body_ is meant body without any particular shape, or figure, there being no one shape or figure common to all animals, without covering of hair, feathers, or scales, &c. nor yet naked; hair, feathers, scales, and nakedness, being the distinguishing properties of particular animals, and for that reason left out of the abstract idea; upon the same account the spontaneous motion must be neither in walking, nor flying, nor creeping, it is nevertheless a motion, but what that motion is, it is not easy to conceive.’