The Republic by Plato Part 5 Page 108

embrace the subjects of knowledge, the other those of opinion?

The latter are the same, as I dare say you will remember, who listened to sweet sounds and gazed upon fair colours, but would not tolerate the existence of absolute beauty.

Yes, I remember.

Shall we then be guilty of any impropriety in calling them lovers of opinion rather than lovers of wisdom, and will they be very angry with us for thus describing them?

I shall tell them not to be angry; no man should be angry at what is true.

But those who love the truth in each thing are to be called lovers of wisdom and not lovers of opinion.

Assuredly.