If you have an apple and I have an apple, and we exchange apples, we both still only have one apple. But if you have an idea and I have an idea, and we exchange ideas, we each now have two ideas. )
你和我各有一个苹果，如果我们交换苹果的话，我们还是只有一个苹果。但当你和我各有一个想法，我们交换想法的话，我们就都有两个想法了。
It is wrong to have an ideal view of the world. That's where the mischief starts. That's where everything starts unravelling.
系统设计的未来在于将形式化方法与传统工程实践相结合。
The main thing is to be moved, to love, to hope, to tremble, to live.
降低成本的最好方法是一开始就没有成本。
我们的潜力是一回事。我们如何利用它是另一回事。