"Everything that humans can imagine. . . Is a possibility in reality."
This line was actually by a real life physicist but was used in a two-paged spread in Chapter 218.
I also like the Davy back fight arc wherein Nami thought of claiming Foxy as prize to which everyone vehemently opposed
Robin: Actually Nami, if we do as you said, we will certainly get an easy win. However, I don't want that split head traveling with me.
Oh, and that scene wherein Zoro wanted to drag Vivi back on board since the whole crew was lonely, to which Luffy responded with the three swords / four swords insult LOL
But once you conquer the world, then comes the hard part.
What kind of world would you create?