出处:1876年3月10日，贝尔第一次通过他发明的电话在寝室向在实验室里的助手沃森说的一句话。
根据自然法，所有人都是自由的。
Probability theory is nothing but common sense reduced to calculation.
Because I'm your mom, it counts the most because I know you the most.
获得智慧是一种道德责任，它不仅仅是为了让你们的生活变得更加美好。有一个相关的道理非常重要，那就是你们必须坚持终身学习。如果不终身学习，你们将不会取得很高的成就。光靠已有的知识，你们在生活中走不了多远。
Wisdom acquisition is a moral duty. It’s not something you do just to advance in life. And there’s a corollary to that proposition which is very important. It means that you’re hooked for lifetime learning, and without lifetime learning you people are not going to do very well. You are not going to get very far in life based on what you already know.