And he did it from Bukhara. But he investigated Pascal's triangle and the binomial theorem. And keep in mind, this was over 500 years before Pascal. So maybe it should actually be called Khayyam's triangle. And just to get a sense of his poetry or a sense of the Rubaiyat in general, which I encourage you to look up and read, and this is at least Fitzgerald's translation of it. And that inverted bowl we call the sky, where under crawling cooped we live and die. Lift not thy hands to it for help, for it rolls impotently on as thou or I.