Wesley Corpus

4. Without this spring of life, this vital fire, there could be no circulation of the blood; consequently, no motion of any of the fluids, of the nervous fluid in particular (if it be not rather, as is highly probable, this very fire we are speaking of). Therefore there could not be any sensation, nor any muscular motion. I say, there could be no circulation; for the cause usually assigned for this, namely, the force of the heart, is altogether inadequate to the supposed effect. No one supposes the force of the heart, in a strong man, to be more than equal to the weight of three thousand pounds. Whereas it would require a force equal to the weight of a hundred thousand pounds, to propel the blood from the heart through all the arteries. This can only be effected by the ethereal fire contained in the blood itself, assisted by the elastic force of the arteries through which it circulates. 5. But beside this strange compound of the four elements, -- earth, water, air, and fire, -- I find something in me of a quite different nature, nothing akin to any of these. I find something in me that thinks; which neither earth, water, air, fire, nor any mixture of them, can possibly do: Something which sees, and hears, and smells, and tastes, and feels; all which are so many modes of thinking. It goes farther: Having perceived objects by any of these senses, it forms inward ideas of them. It judges concerning them; it sees whether they agree or disagree with each other. It reasons concerning them: that is, infers one proposition from another. It reflects upon its own operations; it is endued with) imagination and memory; and any of its operations, judgment in particular, may he subdivided into many others.