PBA: I heard the Mashal he gave was like a bagel and cream cheese. The Torah is like the bagel. It’s the important part and what sustains you. But sometimes, if you have the other knowledge to use in conjunction with it, it tastes even sweeter. The knowledge of the natural world (and, to him, literature) was like the cream cheese.
That is very much worth discussion.
I’m more targeting the assertion that he expressed his Torah in terms of literature in ways that people without knowledge of the literature therefore will miss out on his torah.