我曾听说过这样一个说法:快乐就是拥有健康和短暂的记忆。我多么希望这是我发明的,因为说得太对了。
The most successful companies are those that listen to their customers.
追求数学知识是一场永无止境的冒险,充满了挑战、惊喜和解决不可解问题的满足感。
Sustainability isn't an option—it's our responsibility to future generations.