舌为北极，鼻为南极，，磁线的轨迹，穿越。

Now read this

Grothendieck on mathematician’s prowess and beauty of math

Although I am not even remotely acquainted with algebraic geometry (or any maths, for that matter), I found Récoltes et Semailles by Grothendieck a vastly interesting and insightful read. The analysis, reflection combined with metaphors... Continue →