OBSERVATIONS ON MAN,
OBSERVATIONS ON THE FRAME OF THE HUMAN BODY AND MIND, AND ON THEIR MUTUAL CONNEXIONS AND INFLUENCES.
INTRODUCTION.
MAN consists of two parts, body and mind.
The first is subjected to our senses and inquiries, in the same manner as the other parts of the external material world.
The last is that substance, agent, principle, &c. to which we refer the sensations, ideas, pleasures, pains, and voluntary motions.
Sensations are those internal feelings of the mind, which arise from the impressions made by external objects upon the several parts of our bodies.
All our other internal feelings may be called ideas. Some of these appear to spring up in the mind of themselves, some are suggested by words, others arise in other ways. Many writers comprehend sensations under ideas; but I every where use these words in the senses here ascribed to them.
The ideas which resemble sensations, are called ideas of sensation: all the rest may therefore be called intellectual ideas.
It will appear in the course of these observations, that the ideas of sensation are the elements of which all the rest are compounded. Hence ideas of sensation may be termed simple, intellectual ones complex.
The pleasures and pains are comprehended under the sensations and ideas, as these are explained above. For all our pleasures and pains are internal feelings, and conversely, all our internal feelings seem to be attended with some degree either of pleasure or pain. However, I shall, for the most part, give the names of pleasure and pain only to such degrees as are considerable;
