
The doxographer Aetius summarizes this view as "When a man is born, the Stoics say, he has the commanding part of his soul like a sheet of paper ready for writing upon." Diogenes Laërtius attributes a similar belief to the Stoic Zeno of Citium when he writes in Lives and Opinions of Eminent Philosophers that: Stoic epistemology emphasizes that the mind starts blank, but acquires knowledge as the outside world is impressed upon it. This idea was further evolved in Ancient Greek philosophy by the Stoic school. Haven't we already disposed of the difficulty about interaction involving a common element, when we said that mind is in a sense potentially whatever is thinkable, though actually it is nothing until it has thought? What it thinks must be in it just as characters may be said to be on a writing-tablet on which as yet nothing stands written: this is exactly what happens with mind.


In Western philosophy, the concept of tabula rasa can be traced back to the writings of Aristotle who writes in his treatise De Anima ( Περί Ψυχῆς, ' On the Soul') of the "unscribed tablet." In one of the more well-known passages of this treatise, he writes that: See also: Empiricism Ancient Greek philosophy
