A newspaper cartoon pictured a large library with shelf after shelf of books. In the midst of the picture was a man seated at a table, looking at himself in a mirror; and the caption underneath read: “The little thing that puzzles him.” The cartoonist was suggesting that for all of our multiplied knowledge, as symbolized by an endless collection of books, the thing we still know least about is ourselves. Support for this suggestion can be found in the chronological development of the great sciences. The first was astronomy. Then came […]