The key to success is to focus on goals, not obstacles.
The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.
质量不是功能；它是一种纪律。
大学时代，我就希望参与做那些可以改变世界的事情。
抽象的力量在于它允许我们在更高的层次上推理系统，而不会被细节所困扰。
Don’t be afraid to take risks—most great inventions come from bold experiments.