Faith and reason need each other. Faith without reason can degenerate into superstition and fanaticism. Reason without faith can degenerate into tyranny and meaninglessness.
So says Samuel Gregg in his book Reason, Faith, and the Struggle for Western Civilization. He argues that Christianity solved this problem in a unique way, one that would prove to be foundational to Western civilization, making possible its greatest achievements. Christianity takes the Logos of the philosophers–which refers to the rational order built into existence and is the root of the word “logic”–and identifies it with God Himself, incarnate in Jesus Christ.