“The highest part of the human soul, which is called the intelligence and which is not the act of any body and does not need for its proper operation a corporeal instrument—this intelligence, if it were not obscured and weighed down by the mass of the body, would itself have complete knowledge from the irradiation received from the superior light without the help of sense, just as it will have when the soul is drawn forth from the body, and as perhaps those people have who are free from the love and the imaginings of corporeal things.”

Source: Path of Life (1909), p. 12

Accordingly, when in the process of time the senses act through many interactions of sense with sensible things, the reasoning is awakened mixed with these very sensible things and is borne along in the senses to the sensible things as in a ship. But the functioning reason begins to divide and separately consider what in sense were confused. ...But the reasoning does not know this to be actually universal except after it has made this abstraction from many singulars, and has reached one and the same universal by its judgement taken from many singulars.
Commentarius in Posteriorum Analyticorum Libros (c. 1217-1220)

First Tractate : The Animate and the Man, §3
The First Ennead (c. 250)

The Edgar Cayce Remedies, p. 16 )

although many engines move without being touched by any one
VIII. On Mind and Soul, and that the latter is immortal.
On the Gods and the Cosmos

Upon the Sovereign Sun (362)

Plato, Phaedo

Napoleon the Little (1852), Book V, V
Napoleon the Little (1852)