采矿效率不仅仅是成本问题，更是减少环境影响的问题。

I can dispense with all truth, but not with the search for truth.

在你成为领导者之前，成功的全部就是自我成长；当你成了领导者，成功的全部就变成帮助他人成长。

The true measure of a leader is how they respond in challenging times.

思维和行为在生命有机体中是不可分割的。

解释：称赞人不夸大他好的地方，那么听的人心里不痛快；诽谤人不增加他的过错，那么听的人心里不满足。

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.