This is truely an absurd statement. While I would wholehartedly agree that the majority of christians/religious people are at best naive, (and at worst foolish), there has been plenty of highly intelligent religious people that have influenced modern society.
Some examples: Soren Kierkegaard, Blaise Pascal, C.S. Lewis, Francis Bacon, Thomas Hobbes, Carl Jung, John Locke.... and this is just naming a few of the top of my head...
To think that one cannot even name one intelligent religious person, is an incredibly arrogant statement.
M!
"I assess the power of a will by how much resistance, pain, torture it endures and knows how to turn to its advantage" Nietzsche