可持续性不仅仅是种树;而是种下能成长为行动的想法。
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
引用沈祖芸
The beauty of the world has two edges, one of laughter, one of anguish, cutting the heart asunder.
The best way to learn mathematics is to do mathematics.