I have a few questions about the following passage and would be grateful for any help.
Illud te, Tulle, moneo: Etrusca res quanta sit, tu, quo propior es, eo magis scis. Multum illi terra, plurimum mari valent.
In the margin, Ørberg writes quo…eo (+ comp) = quanto…tanto. I understand the text to mean “by how much closer you are by so much you know more.” Or perhaps, “the closer you are the more you know.” So the whole sentence would be "How great the Etruscan state is, you know more (than I) by the degree to which you are closer (to it). So how would I construct that using quanto…tanto? Would it be Etrusca res quanta sit, tu, quanto propior es, tanto magis scis.?