Thomas Carlyle (1795–1881). Inaugural Address at Edinburgh.
Vol. 25, pp. 364-374 of The Harvard Classics
The most unhappy man, Carlyle says, is the man who has no real work - no interest in life. To avoid this miserable state, he advises faithful and diligent reading along the lines dictated by curiosity and interest.
It remains, however, practically a most important truth, what I alluded to above, that the main use of Universities in the present age is that, after you have done with all your classes, the next thing is a collection of books, a great library of good books, which you proceed to study and to read. What the Universities can mainly do for you,—what I have found the University did for me, is, That it taught me to read, in various languages, in various sciences; so that I could go into the books which treated of these things, and gradually penetrate into any department I wanted to make myself master of, as I found it suit me.