The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

只有不断学习，才能在激烈的竞争中立于不败之地。

艺术不是一件东西；它是一种方式。

林业的未来在于平衡经济增长与生态责任。

研究历史的人，贵在能够贯通古今的变化，探究天道与人事的关系。