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WHETHER THE SOUL BE A BODY, AND WHAT IS THE NATURE AND.
ESSENCE OF IT.
All those named by me do affirm that the soul itself is incorporeal, and by its own nature is in a motion, and in its own self is an intelligent substance, and the living actuality of a natural organical body.

The followers of Anaxagoras, that it is airy and a body.

The Stoics, that it is a hot exhalation.

Democritus, that it is a fiery composition of things which are perceptible by reason alone, the same having their forms spherical and without an inflaming faculty; and it is a body.
Epicurus, that it is constituted of four qualities, of a fiery quality, of an aerial quality, a pneumatical, and of a fourth quality which hath no name, but it contains the virtue of the sense.