Faith is bigotry and superstition.
A casual stroll through a lunatic asylum shows that faith does not prove anything. If one goes back in the chain of causes further and further, one must come to a first cause - God. If there can be anything without a cause it may just as well be the universe as God. It also is an unwarranted assumption that the chain of causes stops. There is so much order in the universe that it must have been caused by an intelligent agent.