Sustainability is not just a goal, it's a responsibility we owe to the future.

善待每个人，然后照亮夜晚。

The world is not run from where he thinks. Not from castle walls, but from countinghouses, not by the call of the bugle but by the click of the abacus, not by the grate and click of the broadsword but by the scrape of the pen.

In mathematics, there are no shortcuts.