2397. Then it also [follows] hence, that if a man only runs over a volume with his eyes, and does not read what he has written, but slightly, they immediately know what it contains, and of what sort were his ideas about each thing; therefore if he should read even a single line, though written many years before, they know innumerable things, [as] of what quality his ideas have been, whence [they came] which precede [and] which follow; and this at a glance of the eye. - 1748, June 23.