"When I reached intellectual maturity, and began to ask myself whether I was an atheist, a theist or a pantheist, a materialist or an idealist, a Christian or a freethinker, I found that the more I learned and reflected, the less ready was the answer. The one thing on which most of these good people were agreed was the one thing in which I differed from them. They were quite sure they had attained a certain "gnosis" — had more or less successfully, solved the problem of existence; while I was quite sure that I had not, and had a pretty strong conviction that the problem was insoluble."