From Halopedia, the Halo wiki
I kid you not, on page 203 of the Fall of Reach Dr Halsey turns herself into a pickle and calls herself "Pickle Halsey". Funniest shit I've ever seen.
Reading all of the books just to realize that Master Chief's suit doesn't really jack him off.
I've looked into the eyes of a man while I killed him. I thought that the experience of taking the life of another would make me feel powerful. Instead, as I watched the features of his face change from tense panic to a dead stare, I realized how powerless we truly are. No matter how much "power" we attain in our lives, the reactions that keep us alive cannot continue forever.
I thought that killing him would give me control, but one cannot control death. All I did was speed up an inevitable process. I looked down in horror at the corpse I had produced, the complex organism reduced to an organic pile of soon-to-be decaying flesh. I thought to myself, is this all we're here for? To keep our chemical reactions going until something forces us to stop? I don't know. All I do know is that I've got a higher k/d than you now.