The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

作家是社会的良心。

I must study politics and war that my sons may have liberty to study mathematics and philosophy.

The weight of stone is nothing compared to the weight of responsibility we carry.

The pursuit of happiness is not just about seeking pleasure, but also about finding meaning and purpose in life.

The only way to achieve the impossible is to believe it is possible.

采矿业的可持续性不是一种选择，而是我们对后代的责任。