The end of man is knowledge but there's one thing he can't know. He can't know whether knowledge will save him or kill him. He will be killed, all right, but he can't know whether he is killed because of the knowledge which he has got or because of the knowledge which he hasn't got and which if he had it would save him.
Nurture an appetite for being puzzled, for being confused, indeed for being openly stupid, and that despite what you may think is very difficult...We all know the cliche' that a little knowledge can be a dangerous thing. It is also true that a lot of knowledge can be a dangerous thing as well...use your ignorance as well as your knowledge for creative means.
I thought to myself, 'I am wiser than this man neither of us knows anything that is really worthwhile, but he thinks he has knowledge when he has not, while I, having no knowledge, do not think that I have. I seem, at any rate, to be a little wiser than he is on this point I do not think that I know what I do not know.
The fact that people have religious experiences is interesting from the psychological point of view, but it does not in any way imply that there is such a thing as religious knowledge...Unless he can formulate this 'knowledge' in propositions that are empirically verifiable, we may be sure that he is deceiving himself.