And I recalled the whole course of my mental labour and was horrified. It was now clear to me that for man to be able to live he must either not see the infinite, or have such an explanation of the meaning of life as will connect the finite with the infinite. Such an explanation I had had; but as long as I believed in the finite I did not need the explanation, and I began to verify it by reason. And in the light of reason the whole of my former explanation flew to atoms. But a time came when I ceased to believe in the finite. And then I began to build up on rational foundations, out of what I knew, an explanation which would give a meaning to life; but nothing could I build. Together with the best human intellects I reached the result that 0 equals 0, and was much astonished at that conclusion, though nothing else could have resulted.

What was I doing when I sought an answer in the experimental sciences? I wished to know why I live, and for this purpose studied all that is outside me. Evidently I might learn much, but nothing of what I needed.