Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge, so that we use it to destroy ourselves? Even if that is so, knowledge remains better than ignorance. ↗
The object is very clear in the fight against racism; you have reasons why you're opposed to it. But when you're writing a novel, you don't want the reader to come out of it voting yes or no to some question. Life is more complicated than that. ↗
For if any man who never saw fire proved by satisfactory arguments that fire burns. His hearer's mind would never be satisfied, nor would he avoid the fire until he put his hand in it that he might learn by experiment what argument taught. ↗