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 That said, there are certain statements such as Newton's Third Law of Motion, generalized into the Principle of Equivalence. This principle is the logical basis for general relativity, which gave rise to spacetime. The success of general relativity influenced Einstein to eschew quantum theory, to which he made seminal contributions, and to eventually believe that all physical theory ought to be independent of observation. He lost his position of leadership in physics as a result of his belief in determinismAbraham Pais, Inward Bound rather than chanceMax Born, Natural Philosophy of Cause and Chance