As a mathematician, I'm especially fond of His send-up of esoteric research in "Nikolai Ivanovich Lobachevsky". He also wrote one which is near and dear to those who love Calculus. It's entitled "There's a Delta for every Epsilon", and is a clarion call to those who wish to liberate the theory of limits from the tyranny of positive epsilons. Those of you who have suffered through theoretical calculus will identify.