"Today or tomorrow sickness and death will come (they had come already) to those I love or to me; nothing will remain but stench and worms. Sooner or later my affairs, whatever they may be, will be forgotten, and I shall not exist. Then why go on making any effort? . . . How can man fail to see this? And how go on living? That is what is surprising! One can only live while one is intoxicated with life; as soon as one is sober it is impossible not to see that it is all a mere fraud and a stupid fraud! That is precisely what it is: there is nothing either amusing or witty about it, it is simply cruel and stupid."
But don't give up.
Keep reading and you'll understand why.