“Parva Naturalia” by Aristotle

In this collection of treatises, Aristotle employs the scientific method (namely, observation, inference, hypothesis and empirical proof) to determine the nature and cause of the joint activities of body and soul, namely, sense perception, memory, sleep, dreams, breathing, aging and death.

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“Theaetetus” by Plato

The Origin of Knowledge and Error When the wax in the soul of a man is deep and abundant and smooth and properly kneaded, the images that come through the perceptions are imprinted upon this heart of the soul; when this is the case, and in such men, the imprints, being clear and of sufficient depth, are also lasting. And men of this kind are in the first place quick […]

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