“ If you never ask yourself any questions about the meaning of a passage, you cannot expect the book to give you any insight you do not already possess. 如果你从来没有问过自己关于一篇文章的意义的任何问题,你就不能指望这本书能给你任何你尚未拥有的洞察力。 Mortimer J. Adler 莫蒂默·杰尔姆·阿德勒
“ All wish to possess knowledge, but few, comparatively speaking, are willing to pay the price. 所有人都希望拥有知识,但相对而言,很少有人愿意为此付出代价。 Juvenal 尤文