Learning consists in the modification of certain mediating processes which operate between the stimulus and the response.

Publicity is the life of this culture—in so far as without publicity capitalism could not survive—and at the same time publicity is its dream.

The measure of success is not just in yields, but in lives improved.

战争是外交的延续，可通过其他手段。

没有功能的设计只是艺术。

可持续发展必须成为煤炭行业每个决策的核心。