Mental processes evolved to solve practical problems.

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.

The only real elegance is in the mind; if you've got that, the rest really comes from it.

矿业的未来在于合作，而非竞争。

创新是区分领导者和追随者的关键。