The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.

黑云受到光的接吻时，就变成了天上的花朵。

A theory should not attempt to explain all the facts, because some of the facts are wrong.

插画不应该只是装饰文本；它们应该扩展文本。

即使追求效率，质量也绝不能妥协。