Let children learn about different faiths, let them notice their incompatibility, and let them draw their own conclusions about the consequences of that incompatibility. As for whether they are โvalid,โ let them make up their own minds when they are old enough to do so.
Richard DawkinsBush and bin Laden are really on the same side: the side of faith and violence against the side of reason and discussion. Both have implacable faith that they are right and the other is evil. Each believes that when he dies he is going to heaven. Each believes that if he could kill the other, his path to paradise in the next world would be even swifter. The delusional "next world" is welcome to both of them. This world would be a much better place without either of them.
Richard DawkinsSo Occam's razor - Occam says you should choose the explanation that is most simple and straightforward - leads me more to believe in God than in the multiverse, which seems quite a stretch of the imagination.
Richard Dawkins