„Many people would claim that the boundary conditions are not part of physics but belong to metaphysics or religion. They would claim that nature had complete freedom to start the universe off any way it wanted.“

— Stephen Hawking

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„Science is a differential equation. Religion is a boundary condition.“
— Alan Turing
„Yet all the evidence is that it evolves in a regular way according to certain laws. It would therefore seem reasonable to suppose that there are also laws governing the boundary conditions.“
— Stephen Hawking
„Many religions lay out a set of precepts… and claim that these instructions were given by a god or gods.“
— Carl Sagan