Samuel Johnson on Reading, from James Boswell's Life of Johnson:
He [Johnson] said, that for general improvement, a man should read whatever his immediate inclination prompts him to; though, to be sure, if a man has a science to learn, he must regularly and resolutely advance. He added, "what we read with inclination makes a much stronger impression. If we read without inclination, half the mind is employed in fixing the attention; so there is but one half to be employed on what we read." He told us, he read Fielding's Amelia through without stopping. He said, "if a man begins to read in the middle of a book, and feels an inclination to go on, let him not quit it, to go to the beginning. He may, perhaps, not feel again the inclination."