The main task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control.
理论上,理论和实践之间没有区别。但实际上,是有区别的。
森林的真正价值不是用板英尺衡量,而是用生物多样性和碳封存。
如果我们忽视海洋的呼声,它的沉默将是我们最大的失败。