“That God is incorporeal, that He cannot be compared with His creatures, that He is not subject to external influence; these are things which must be explained to every one according to his capacity, and they must be taught by way of tradition to children and women, to the stupid and ignorant, as they are taught that God is One, that He is eternal, and that He alone is to be worshipped. Without incorporeality there is no unity, for a corporeal thing is in the first case not simple, but composed of matter and form which are two separate things by definition, and secondly, as it has extension it is also divisible.”

(Maimonides)