and ceases to retain those faculties which were previously inherent in it, and especially the power of motion; so that sensation perishes equally as far as the soul is concerned; for it is impossible to imagine that it still feels, from the moment when it is no longer in the same conditions of existence, and no longer possesses the same movements of existence in reference to the same organic system; from the moment, in short, when the things which cover and surround it are no longer such, that it retains in them the same movements as before.
(Epicurus expresses the same ideas in other works, and adds that the soul is composed of atoms of the most perfect lightness and roundness; atoms wholly different from those of fire. He distinguishes in it the irrational part which is diffused over the whole body, from the rational part which has its seat in the chest, as is proved by the emotions of fear and joy. He adds that sleep is produced when the parts of the soul diffused over the whole of the body concentre themselves, or when they disperse and escape by the pores of the body; for particles emanate from all bodies.)
“It must also be observed, that I use the word incorporeal (ἀσώματος) in the usual acceptation of the word, to express that which is in itself conceived as such. Now, nothing can be conceived in itself as incorporeal except the vacuum; but the vacuum cannot be either passive or active; it is only the condition and the place of movement. Accordingly, they who pretend that the soul is incorporeal, utter words destitute of sense; for, if it had this character, it would not be able either to do or to suffer anything; but, as it is, we see plainly enough that it is liable to both these circumstances.
“Let us then apply all these reasonings to the affections and sensations, recollecting the ideas which we laid down at the beginning, and then we shall see clearly that these general principles