The purpose of advertising is to sell. It is the only purpose.

没有所谓的"应用科学"这一特殊类别；只有科学及其应用，它们之间的关系就像果实与结出果实的树之间的关系一样。

任何领域的专业知识都涉及基本技能的自动化，从而释放注意力用于更高层次的性能表现。

To live outside the law， you must be honest.

When we thin forests with purpose, we're not taking away life—we're making room for more life to flourish.

Silence is the virtue of fools.

学习数学的最好方法就是做数学。