Copplestones Cosmological Argument

Question 1

What is his argument based on

Answer 1

Builds on aquinas way 3 and Leibniz principle of sufficient reason

Question 2

What’s his argument

Answer 2

He said everything depends on something else for existence. There must be a reason for everything that exists beyond or outside our universe. This thing must be a necessary being (contains the reason for its existence within itself). This is god