"I guess the same thing will happen to me. Now that it's definite, I don't want it to happen." PG 18
"Why can't I remember? I've got to fight. I lie in bed for days and I don't know who or where I am." PG 19
"I'm glad I got a second chance to be smart because I learned a lot of things that I never even knew were in this world and I'm grateful that I saw it all for a little bit." PG 22
Algernon died. Charlie is worried that that might happen to him. He does not want it to, he wants to hold on to the things he's learned.
Charlie has started to notice his mental capacity srinking,
Charlie's mental capacity had struck, much like Algernon, he has decided to leave all this behind and go somewhere where no one will know about the operation. He has also left behind all his research.