More generally (and this applies to Christianity no less than to Islam), what is really pernicious is the practice of teaching children that faith itself is a virtue. Faith is an evil precisely because it requires no justification and brooks no argument. Teaching children that unquestioned faith is a virtue primes them - given certain other ingredients that are not hard to come by - to grow up into potentially lethal weapons for future jihads or crusades.

The God Delusion (2006)