“‘Idleness is a disease which must be combated; but I would not advise a rigid adherence to a particular plan of study. I myself have never persisted in any plan for two days together. A man ought to read just as inclination leads him; for what he reads as a task will do him little good. A young man should read five hours in a day, and so may acquire a great deal of knowledge.’”

—Ben Johnson, quoted in James Boswell’s Life of Johnson, 1791.