种树的最佳时间是二十年前，其次是现在。
The best time to plant a tree was twenty years ago. The second best time is now.
The only way to deal with the past is to accept it.
生活的艺术在于克服困难而不战胜它们。
The future of computer science will be shaped by those who can seamlessly blend mathematical theory with computational practice.
梦想与现实之间的区别在于行动。