The principles of logic and mathematics are true universally simply because we never allow them to be anything else.
逻辑与数学原理之所以普遍为真,只不过是我们从不允许它们为假。
The city is the ultimate expression of our civilization.
保持简单,简单的事情重复做。
The best time to plant a tree was 20 years ago. The second-best time is now.