【译文】古人学习的人是为了提高自己，现在学习的人是为了炫耀给别人看。
The arithmetic of modular forms is a window into the hidden structures of the universe.
如果耕种天地，不将天地整理好，这样就相当于是胡闹。耕种天地，一定要将土地平整翻新，然后再去播种。
The most important skill for an empirical researcher is not math, but judgment.