BudziszewskiJ. Budziszewski made a great summary of the cosmological argument for God’s existence.  He wrote, “Anything which might not have been requires a cause.  Philosophers call such things ‘contingent beings.’  But the universe…is itself a contingent being, so the universe must have a cause.  Now if we say that the cause of the universe is another contingent being, we merely invite an infinite regress.  For the regress to have an end, we must eventually reach a being which is not contingent but necessary—not something which might not have been, but something which can’t not be.  Furthermore this necessary being must be sufficient to cause its effects, and so it must have all of the qualities traditionally ascribed to God: Eternity, power, and all the rest.”