I tried to lessen his pain and anxiety, having a certain philosophy of my own which was relatively satisfactory to me. "The fear of death seems absolutely chimerical," said I. "There are but two hypotheses to make about it: every night it may be that we shall not wake again the next morning; and yet, when we think of it, this idea does not prevent our going to sleep. Now, then, first, either all being ended with life, we do not wake again anywhere,--and in that case it is a sleep that has not ended, but which will endure throughout eternity, so that we shall never know anything about it,--or else, secondly, the soul outliving the body, we shall wake up somewhere else and continue our activity. In that case there is nothing to fear in the awakening,--it should rather attract us. There is a reason for all things in Nature; and every creature, the meanest as well as the noblest, finds his happiness in the exercise of his faculties." [Illustration] This reasoning seemed to calm him; but the restlessness of doubt soon returned, pricking like thorns. Sometimes he would wander off alone through the spacious cemeteries of Paris, seeking out the most deserted alleys between the graves, listening to the wind among the trees, and the rustle of the leaves in the paths. Sometimes he went away into the woods in the suburbs of the great city, and would walk about for hours at a time muttering to himself. At other times he would spend a whole day in his study in the Place du Panthéon, which he used as study, work and reception room at the same time; and there, until far into the night, he would dissect a brain brought back from the clinic, studying the small slices of gray substance through his microscope. The uncertainty of the sciences called positive, the sudden halt to his mind in the solution of these problems, threw him into fits of deepest despair; and I have found him many times in a state of utter prostration, his eyes set and shining, his hands burning with fever, his pulse agitated and intermittent. In one of these crises I was obliged to leave him for a few hours, and almost feared I should not find him alive on my return, at about five o'clock in the morning. He had near him a glass of cyanide of potassium, which he tried to hide as I came in; but recovering his calmness almost at once, he said, with great serenity and a slight smile, "What is the good? If we are immortal, it would be of no use, and I wanted to know about it sooner." That day he acknowledged he believed that he had been lifted painfully by his hair to the ceiling, and allowed to drop with all his weight upon the floor.