Breakfast Plato

I would have you imagine, then, that there exists in the mind of man a block of wax... and that we remember and know what is imprinted as long as the image lasts; but when the image is effaced, or cannot be taken, then we forget or do not know.
-- Plato, Dialogs, Theateus 191

[Quoted in "VMS Internals and Data Structures", V4.4, when referring to image activation and termination.]

This explains Alzheimer's Disease. What a genius. However, did he even know the difference between "mind" and "brain" or were the two terms synonymous back then?