Efficiency in grain production isn't an option—it's a necessity.

Computer science is no more about computers than astronomy is about telescopes.

领导力在外交中起着重要作用，良好的领导能够带领团队应对复杂的国际挑战。

选自《盐铁论·孝养》。距：通“拒”。【大意】拒绝接受别人意见的视听闭塞，自己独断专行的就会遭到孤立。

世界是一个故事的图书馆，每个人都是一本书。