“One should not educate the child to believe something that is correct only for one’s childhood and has to be changed for more correct beliefs later on.
‘He’ll understand when he grows up.’
On the contrary, the child has to be helped to understand in accordance with his capacities, but what he learns has to be correct, so that even when he grows up he won’t find any discrepancies—it will still be correct.”
–Rabbi Adin Steinsaltz
From Pebbles of Wisdom from Rabbi Adin Steinsaltz