21世纪最激动人心的突破将不是因为技术，而是因为人类概念的扩展。

The perfection of machinery is to produce the desired effect with the least possible friction and waste.

Good product managers should think like users and act like CEOs.

谨记自己总会死去，是让自己避免陷入“人生有所失”思考的最佳方法。