Some books are to be tasted, others to be swallowed, and some few to be chewed and digested; that is, some books are to be read only in parts; others to be read but not curiously; and some few to be read wholly, and with diligence and attention. Some books also may be read by deputy, and extracts made of them by others.
有些书籍只须浅尝，有些可以吞咽，只有少数需要仔细咀嚼，慢慢消化品味。所以，有的书只需读其中的一部分，有的书只要知其梗概，而对于少数的好书，则应当通读，细读，用心读。有些书甚至可以请人代读，之后读取他的笔记即可。

——Francis Bacon, Essays Of Studies
——弗朗西斯·培根，《论学习》