How many kinds of living creatures there are, and whether all are rational and perceptible.1156
⟨Aëtius⟩: four kinds
I.43.1 · Wachsmuth pp. 297
Plato and Aristotle recognize four kinds of living creatures: terrestrial, aquatic, winged, and heavenly.1157 For the stars too are said to be living creatures, and the cosmos † and the divinely inspired one, a rational, immortal living creature.1158