On the face of things, children might seem unable to fully grasp the intricacies of classical studies, but they do have a "silent understanding" of sorts. They can understand things quite deeply, they understand how life works. When the time is ripe, all the information they've memorized will become clear.
表面上孩子好像不懂深奧的經學，其實卻有某種「默默的懂」，還可能懂得很深，懂到生命裡去，並在適當時候「豁然開朗」。