The best time to plant a tree was 20 years ago. The second-best time is now.

To understand a program you must become both the machine and the program.

人生是一系列的选择，而最难的那些才是最重要的。

Collaboration across nations is key to solving the challenges of overfishing.

变革的速度要求敏捷性——无论是思维还是行动。