The Republic by Plato Part 9 Page 40

Or if honour or victory or courage, in that case the judgment of the ambitious or pugnacious would be the truest?

Clearly.

But since experience and wisdom and reason are the judges —

The only inference possible, he replied, is that pleasures which are approved by the lover of wisdom and reason are the truest.

And so we arrive at the result, that the pleasure of the intelligent part of the soul is the pleasantest of the three, and that he of us in whom this is the ruling principle has the pleasantest life.

Unquestionably, he said, the wise man speaks with authority when he approves of his own life.

And what does the judge affirm to be the life