最古老、最简短的词语——'是'和'否'——是需要最多思考的。
The oldest， shortest words—'yes' and 'no'—are those which require the most thought.
一个词的意义在于它在语言中的使用。
The art of progress is to preserve order amid change and to preserve change amid order.
A clear vision turns obstacles into stepping stones.
Walls define space, but openings connect it to the world.