I support the sentiment. I'm not sure anyone has all that much insight though, especially if you don't consider the things Thurston and Grothendieck have writte

I support the sentiment. I'm not sure anyone has all that much insight though, especially if you don't consider the things Thurston and Grothendieck have written to be adequate. I'm got a PhD in mathematics and have interacted with a lot of mathematicians, some of whom are up there with Milne, and I could pretty much say everything I know about how to learn mathematics in a paragraph or two.