Soon I may be in charge of a classroom full of high school students taking a mathematics olympiad test. With this opportunity I thought that maybe I should write a quote from a mathematician on the board for the kids. Something that intrigues and/or inspires them.

Everyone knows the usual famous quotes (god invented the natural numbers and everything else is the work of man, and such) but I wanted to look for something more underground and maybe more spicy.

My first thoughts were getting quotes from either Shinichi Mochizuki or Norman Wildberger (maybe one from each?) but these people don't have wikiquote pages. So could anyone recommend me good excerpts from Mochizuki's papers or Wildberger's videos I could get good quotes from?

And well, if this search is not fruitful then I guess quotes from other mathematicians are also valid, as long as they are not basic and mainstream.