Thesauros Literature Philosophy Θεαίτητος

Θεαίτητος

Θεαίτητος Plato

189–190

Socrates
SOC. Now when one’s mind does this, does it not necessarily have a thought either of both things together or of one or the other of them?
Theaetetus
THEAET. Yes, it must; either of both at the same time or in succession. 30
Socrates
SOC. Excellent. And do you define thought as I do?
Theaetetus
THEAET. How do you define it?
Socrates
SOC. As the talk which the soul has with itself about any subjects which it considers. You must not suppose that I know this that I am declaring to you. But the soul, as the image presents itself to me, when it thinks, is merely conversing with itself, asking itself questions and answering, affirming and denying. When it has arrived at a decision, whether slowly or with a sudden bound, and is at last agreed, and is not in doubt, we call that its opinion; and so I define forming opinion as talking and opinion as talk which has been held, not with someone else, nor yet aloud, but in silence with oneself. How do you define it?
Theaetetus
THEAET. In the same way.
Socrates
SOC. Then whenever a man has an opinion that one thing is another, he says to himself, we believe, that the one thing is the other.
Theaetetus
THEAET. Certainly.

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