This document discusses philosophical arguments for the existence of God, including the cosmological and contingency arguments.
1) The cosmological argument states that everything that exists has a cause, and there must be an uncaused first cause. Some object that an infinite regress of causes is possible or that the first cause need not be God.
2) The contingency argument states that everything that exists is either necessary or contingent. Since not everything can be contingent, there must be some necessary being, which is defined as God. Critics argue that existence is not an attribute and that the whole may not require further explanation beyond contingent parts.