Theodore Dalrymple

Many young people now end a discussion with the supposedly definitive and unanswerable statement that such is their opinion, and their opinion is just as valid as anyone else's. The fact is that our opinion on an infinitely large number of questions is not worth having, because everyone is infinitely ignorant.

I do not think it possible for anyone to get by in life without prejudice. However, the attempt to do so leads many people to suppose that, in order to decide any moral question, they have to find an indubitable first principle from which they can deduce an answer.