J. R. R. Tolkien was an amazing writer, poet, and professor of Language and Literature - and a devout Catholic.
C. S. Lewis was a a novelist, poet, medievalist, literary critic, essayist, and faculty member at Oxford. He was also a lay theologian and Christian apologist.
Here is a listing of the twenty most brilliant Christian college professors today, they might surprise you:
http://www.collegecrunch.org/professors/the-20-most-brilliant-christian-professors/
We both know someone online who claims to be an atheist, but they are one of the most hate-filled, ignorant, racist posters around. I'm a Christian, and my IQ was scored 138 on one standardized test, and 140 on another. So there are certainly exceptions, LOL...
