The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.

I dream that my son will grow up to be a good person, a free person. I dream that someday you will return to revisit the land of our childhood. I dream that flowers will bloom in the streets again...and kites will fly in the skies!

The only limit to our realization of tomorrow will be our doubts of today.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

珍贵的宝物容易求得，而真心相待的郎君却难以寻觅

译文：人生最大的祸事，都在转瞬之间不会忍耐，因此做事一定要慎重小心。赏析：为人处世，如果事事都要和别人争高低，矛盾和冲突在所难免，其后果对双方都不利。如果有一方懂得退让和忍耐，祸患自然就会消失。

Evil is whatever distracts.

不过是君主不把它［爱人利人］用在政事上，士大夫也不把它付诸行动罢了。