This was in the past. Now at lectures I experience only torture. Not half an hour passes before I begin to feel an invincible weakness in my legs and shoulders. I sit down in my chair, but I am not used to lecture sitting. In a moment I am up again, and lecture standing. Then I sit down again. Inside my mouth is dry, my voice is hoarse, my head feels dizzy. To hide my state from my audience I drink some water now and then, cough, wipe my nose continually, as though I was troubled by a cold, make inopportune puns, and finally announce the interval earlier than I should. But chiefly I feel ashamed. Conscience and reason tell me that the best thing I could do now is to read my farewell lecture to the boys, give them my last word, bless them and give up my place to someone younger and stronger than I. But, heaven be my judge, I have not the courage to act up to my conscience. Unfortunately, I am neither philosopher nor theologian. I know quite well I have no more than six months to live; and it would seem that now I ought to be mainly occupied with questions of the darkness beyond the grave, and the visions which will visit my sleep in the earth. But somehow my soul is not curious of these questions, though my mind grants every atom of their importance. Now before my death it is just as it was twenty or thirty years ago. Only science interests me.--When I take my last breath I shall still believe that Science is the most important, the most beautiful, the most necessary thing in the life of man; that she has always been and always will be the highest manifestation of love, and that by her alone will man triumph over nature and himself. This faith is, perhaps, at bottom naive and unfair, but I am not to blame if this and not another is my faith. To conquer this faith within me is for me impossible. But this is beside the point. I only ask that you should incline to my weakness and understand that to tear a man who is more deeply concerned with the destiny of a brain tissue than the final goal of creation away from his rostrum and his students is like taking him and nailing him up in a coffin without waiting until he is dead. Because of my insomnia and the intense struggle with my increasing weakness a strange thing happens inside me. In the middle of my lecture tears rise to my throat, my eyes begin to ache, and I have a passionate and hysterical desire to stretch out my hands and moan aloud. I want to cry out that fate has doomed me, a famous man, to death; that in some six months here in the auditorium another will be master. I want to cry out that I am poisoned; that new ideas that I did not know before have poisoned the last days of my life, and sting my brain incessantly like mosquitoes. At that moment my position seems so terrible to me that I want all my students to be terrified, to jump from their seats and rush panic-stricken to the door, shrieking in despair. It is not easy to live through such moments. II