Who famously said that "God does not play dice with the universe"?

Einstein was a strict determinist who believed that human behavior was completely determined by causal laws. For that reason, he refused the chance aspect of quantum theory, famously telling Niels Bohr: "God does not play dice with the universe." Albert Einstein's religious views have been widely studied and often misunderstood. He stated, "I’m not an atheist... I believe in Spinoza’s God who reveals himself in the orderly harmony of what exists, not in a God who concerns himself with fates and actions of human beings".

Source: Wikipedia