History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.

In mathematics, the art of proposing a question must be held of higher value than solving it.

The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.

The most sustainable building is the one that is already built.

有一个终点是好的；但最终重要的是旅程本身。

爱好学习接近智慧，努力行善接近仁德，知道耻辱就接近勇敢。