The essence of computational complexity is to understand the limits of what can be computed efficiently.

Your brain is more powerful than you think; the key is learning how to activate it.

教师必须具有健康的体魄，农人的身手，科学的头脑，艺术的兴味，改革社会的精神。

每个项目都是新的挑战，新的学习机会。