DEAR BOY: I am very well pleased with your 'Itinerarium,' which you sent me from Ratisbon. It shows me that you observe and inquire as you go, which is the true end of traveling. Those who travel heedlessly from place to place, observing only their distance from each other, and attending only to their accommodation at the inn at night, set out fools, and will certainly return so. Those who only mind the raree-shows of the places which they go through, such as steeples, clocks, town-houses, etc., get so little by their travels, that they might as well stay at home. But those who observe, and inquire into the situations, the strength, the weakness, the trade, the manufactures, the government, and constitution of every place they go to; who frequent the best companies, and attend to their several manners and characters; those alone travel with advantage; and as they set out wise, return wiser. I would advise you always to get the shortest description or history of every place where you make any stay; and such a book, however imperfect, will still suggest to you matter for inquiry; upon which you may get better informations from the people of the place. For example; while you are at Leipsig, get some short account (and to be sure there are many such) of the present state of the town, with regard to its magistrates, its police, its privileges, etc., and then inform yourself more minutely upon all those heads in, conversation with the most intelligent people. Do the same thing afterward with regard to the Electorate of Saxony: you will find a short history of it in Puffendorf's Introduction, which will give you a general idea of it, and point out to you the proper objects of a more minute inquiry. In short, be curious, attentive, inquisitive, as to everything; listlessness and indolence are always blameable, but, at your age, they are unpardonable. Consider how precious, and how important for all the rest of your life, are your moments for these next three or four years; and do not lose one of them. Do not think I mean that you should study all day long; I am far from advising or desiring it: but I desire that you would be doing something or other all day long; and not neglect half hours and quarters of hours, which, at the year's end, amount to a great sum. For instance, there are many short intervals during the day, between studies and pleasures: instead of sitting idle and yawning, in those intervals, take up any book, though ever so trifling a one, even down to a jest-book; it is still better than doing nothing. Nor do I call pleasures idleness, or time lost, provided they are the pleasures of a rational being; on the contrary, a certain portion of your time, employed in those pleasures, is very usefully employed. Such are public spectacles, assemblies of good company, cheerful suppers, and even balls; but then, these require attention, or else your time is quite lost.