Richard taylor (the cosmological argument): he was an american philosopher, he believes that there must be a reason for the existence of everything in the world, and the world itself. That there is an explanation for it whether it be known or not, for everything. Contingent truth: a truth that depends on something else. Necessary truth: a truth depending only on itself and are true by their very own nature. Self-caused: not meaning something that brings itself into existence, but rather that it is not contingent or dependent on something else but its own nature. A being that can neither come into being nor perish (die). The moon on the other hand is only a secondary derived cause of its light: believes that god really had no beginning. He basically is the beginning: believes that things in the universe; sun, moon, stars and planets seem impossible to exist on their own independently by their very own natures.