每种心理状态都有其存在的目的；要理解它，我们必须询问它在更广泛的行为系统中发挥什么功能。

Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom.

I don’t play for the records, I play because I love the game.

可持续性不仅是一种趋势，更是我们对下一代的责任。