For it is an incorporeal existence, (and) not to be changed in its substance, and perceptible by mind, and invisible, and of one form; (and) therefore not to be put together; not to be dissolved; not to be scattered about. But the body is altogether the contrary; it is perceptible by sense; visible; to be scattered about; to be put together; of many forms. The soul too, being by means of the body close upon what is perceived by a sense, becomes giddy and is troubled, and, as it were, drunk; but being close upon what is perceived by mind, she becomes itself of itself composed and tranquil; nor is she like to that, by which, when she is close to it, she is troubled; so that she is rather like to what is perceived by mind. Now what is perceived by mind, is naturally not to be scattered about, and indestructible. — Alcinous, *Handbook of Platonism*, Ch. 25, trans. George Burges (1854), p. 288. *Surface Gloss:* Body is composite, visible, and scatterable; soul is simple, invisible, and uniform. We know the soul belongs to the indestructible intelligible realm because touching sense-objects through the body makes her dizzy and drunk, whereas touching pure thought makes her calm and stable. **The Nausea Test of Native Habitat:** You can tell what a creature or mind is actually built for by watching what makes it dizzy and what makes it calm. Nothing is natively made of the thing that destabilizes it on contact. If constant immersion in high-velocity sensory noise leaves you staggering and "drunk," while deep structural work settles your nervous system, your native habitat is structure, not noise.
— In our words · Source: Handbook of Platonism (Alcinous)