Stanislaw Marcin Ulam (13 April 1909 – 13 May 1984), was a renowned Polish-American mathematician. He participated in America's Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, invented the Monte Carlo method of computation, and suggested nuclear pulse propulsion. In pure and applied mathematics, he produced many results, proved many theorems, and proposed several conjectures.
1.) ""I'm an agnostic. Sometimes I muse deeply on the forces that are for me invisible. When I am almost close to the idea of God, I feel immediately estranged by the horrors of this world, which he seems to tolerate..." Later Ulam expressed his opinions about matters that have very little in common with science." Polska Agencja Międzyprasowa, Poland: Issue 9 (1976).
2.) Budrewicz/, Olgierd (1977). The melting-pot revisited: twenty well-known Americans of Polish background. Interpress. pp. 36. Retrieved 2012-09-11.