First, Happy Pi Day! Yes, it's 3/14. I guess a lot of people celebrate by eating actual pie, but in reality, Pi is everywhere! Learn more about the "cosmic piece of Pi" from this NASA site by clicking here.
When asked by the prominent American Rabbi Herbert S. Goldstein if Einstein believed in God in a telegram dated April 25, 1929, he responded that he followed a different doctrine.
“I believe in Spinoza’s God, who reveals Himself in the lawful harmony of the world, not in a God who concerns himself with the fate and the doings of mankind,” Einstein replied.
Generally speaking, pantheism identifies God with the universe or regards the universe as a manifestation of God.