Tonight, and next Tuesday night, I will present in my Logic class, as an example of a logical argument, the Argument from Reason for the Existence of God, as presented by Victor Reppert, Robert Adams, Richard Swinburne, and C.S. Lewis.
This is an especially interesting argument for a logic class in that it claims that the existence of logical thinking (reason) is more plausible on theism than naturalism.
For a nice summary of the argument go here.
For criticism of the argument go here.
I found Reppert's little book C.S. Lewis's Dangerous Idea excellent in its presentation of AFR.