The difference between ordinary and extraordinary is that little extra.

在不确定的时代，唯一确定的就是变化本身。

技术在矿物开采中应该同时服务于效率和道德。

The only constant is change, continuing change, inevitable change, that is the dominant factor in society today. No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.

比如说，你下午四点钟来。那么从三点钟起，我就开始感到幸福。时间越临近，我就越感到幸福。到了四点钟的时候，我就会坐立不安：我就会发现幸福的代价。

我认为你不能比较网球的不同时代。每个时代都有其伟大的球员。

我必须学会满足于比我应得的更幸福。