Leo Tolstoy Quote

Several times I asked myself, "Can it be that I have overlooked something, that there is something which I have failed to understand? Is it not possible that this state of despair is common to everyone?" And I searched for an answer to my questions in every area of knowledge acquired by man. For a long time I carried on my painstaking search; I did not search casually, out of mere curiosity, but painfully, persistently, day and night, like a dying man seeking salvation. I found nothing.

Pt. I, ch. 5 - Confession (1882)