Excerpted from Of Studies, by Francis Bacon (1561 - 1626) [1]. The whole essay is only about a page, and well worth reading.
[1] https://www.gutenberg.org/files/575/575-h/575-h.htm#link2H_4...
Edit: haha - wanted to flick you a link and discover about.com says more or less the same thing: http://grammar.about.com/od/60essays/a/studiesessay.htm
[1] http://www.literaturepage.com/read/francis-bacon-essays-102....