Cosmological arguments attempt to show that a god is necessary from principles of causation. There are several such arguments (and other related ones), including the Argument from First Cause, the Kalam Cosmological Argument (advanced by William Lane Craig), and the Argument for an Unmoved Mover. The argument generally follows this rationale: * A1 Everything is caused by something else, creating a - possibly infinite - chain of causation * A2 An infinite chain is impossible, and the only alternative is to cut it by a First Cause * A3 This 'First Cause' is God