Fable should be taught as fable, myth as myth, and miracles as poetic fancies. To teach superstitions as truth is horrifying. The mind of a child accepts them and only through great pain, perhaps tragedy, can the child be relieved of them. Men will fight for superstition as quickly as for the living truth -- even more so, since a superstition is intangible, you can't get at it to refute it, but truth is a point of view, as so is changeable.
I wonder if these words can reasonably attributed to Hypatia, or, elsewhere, in case this a misattribution, if the source can be traced.