Questions on Rational Arguments for the Existence of God

1. What is Anselm's ontological argument for the existence of God?
2. What is Gaunilo's attempted counter-argument to the ontological argument?
3. What is Aquinas' cosmological argument (based on motion, cause, contingency)?
4. Why can't there be an infinite regress of causal events, and why can't God have a cause?
5. How is the argument from perfection different from the argument from design, and what are some objections to the argument from design?
6. What is the argument from morality?