Found in 2 comments on Hacker News
chx · 2019-10-24 · Original thread
By the end of this book reaches college levels. There's nothing better to show how interesting mathematics, to look at it with wonderment. Our education system is to blame.

chx · 2019-01-18 · Original thread
I'd very strongly recommend to familiarize yourself with some fundamental processes and before you lose yourself in a highly symbolic and abstract world, appreciate the beauty of it first, it'll make the long journey much easier.

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