As a student (if such a term could be applied to Lincoln), one who did not know him might have called him indolent. He would pick up a book and run rapidly over the pages, pausing here and there.
At the end of an hour--never more than two or three hours--he would close the book, stretch himself out on the office lounge, and then, with hands under his head and eyes shut, would digest the mental food he had just taken.