The Republic by Plato Part 6 Page 19

may be justly compared to the mutinous sailors, and the true helmsmen to those who are called by them good-for-nothings and star-gazers.

Precisely so, he said.

For these reasons, and among men like these, philosophy, the noblest pursuit of all, is not likely to be much esteemed by those of the opposite faction; not that the greatest and most lasting injury is done to her by her opponents, but by her own professing followers, the same of whom you suppose the accuser to say, that the greater number of them are arrant rogues, and the best are useless; in which opinion I agreed.

Yes.

And the reason why the good are useless has now been explained?

True.