Faith & logic?

My son's friend Dave posted a challenge on Facebook, inviting all to persuade him of their religious beliefs using logic alone — no emotional arguments.

I wonder what the best response would be?

This looked like an interesting related item;

http://winteryknight.wordpress.com/2009/03/20/does-the-bible-teach-that-faith-is-opposed-to-logic-and-evidence/

Sent from my iPhone