I hope I need not confess that a large part of my stock in trade consists of platitudes rescued from the cobwebbed shelves of yesterday... This borrowing and refurbishing of shop-worn goods, as a matter of fact, is the invariable habit of traders in ideas, at all times and everywhere. It is not, however, that all the conceivable human notions have been thought out; it is simply, to be quite honest, that the sort of men who volunteer to think out new ones seldom, if ever, have wind enough for a full day's work.