Srinivasa Ramanujan * the man who knew infinity.

Srinivasa Ramanujan FRS (pronunciation: i/ʃriːnivɑːsə rɑːmɑːnʊdʒən/) (22 December 1887 – 26 April 1920) was an Indian mathematician and autodidact. Though he had almost no formal training in pure mathematics, he made extraordinary contributions to mathematical analysis, number theory, infinite series, and continued fractions. Ramanujan initially developed his own mathematical research in isolation; it was quickly recognized by Indian mathematicians. When his skills became obvious and known to the wider mathematical community, centered in Europe at the time, he began a famous partnership with the English mathematician G. H. Hardy. The Cambridge professor realized that Ramanujan had rediscovered previously known theorems in addition to producing new ones

https://en.m.wikipedia.org/wiki/Srinivasa_Ramanujan