一个好的数学问题的定义是它产生的数学，而不是问题本身。

All men have the stars， but they are not the same things for different people。 For some， who are travelers， the stars are guides。 For others they are no more than little lights in the sky。 For others， who are scholars， they are problems。 For my businessman they were wealth。 But all these stars are silent。 You – you alone – will have the stars as no one else has them.

建筑的未来在于更智能、更环保的解决方案。

解析：告诫人们要珍惜所得。

在物理学的世界里，我们经常发现最简单的问题最难回答。