In his Ispoved' (Confession), Tolstoy gives us a painful picture of a man who, in his search for a solution to the problems of human existence, experiences the same feelings as a man lost in a dense wood:
He comes to an open plain, climbs up a tree, and sees around him endless space, but nowhere a house—he sees darkness, but again no house. Thus I lost my way in the wood of human knowledge, in the twilight of mathematical and experimental science, which opened before me a clear and distant horizon in the direction of which there could be no house, and in the darkness of philosophy, plunging me into a greater gloom with every step I took, until I was at last persuaded that there was, and could be, no way out. When I followed what seemed the bright light of learning, I saw that I had only turned aside from the real question.