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.

Nonviolence is the greatest force at the disposal of mankind.

年轻人必须为履行生活所赋予他们的职责充实自己，同时要抵制生活的诱惑。

The circular economy isn't just good for the planet - it's good business.