霍金寫到,“因為存在有如重力這種法則,宇宙能也將會從虛無中創造自己。自發性的創造為萬物存在的原因。﹝Because there is a law such as gravity, the universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist.﹞”。