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.

There are a great many people, who think themselves employed all day, and who, if they were to cast up their accounts at night, would find that they had done just nothing.  They have read two or three hours mechanically, without attending to what they read, and consequently without either retaining it, or reasoning upon it.  From thence they saunter into company, without taking any part in it, and without observing the characters of the persons, or the subjects of the conversation; but are either thinking of some trifle, foreign to the present purpose, or often not thinking at all; which silly and idle suspension of thought they would dignify with the name of absence and distraction.  They go afterward, it may be, to the play, where they gape at the company and the lights; but without minding the very thing they went to, the play.

Pray do you be as attentive to your pleasures as to your studies.  In the latter, observe and reflect upon all you read; and, in the former, be watchful and attentive to all that you see and hear; and never have it to say, as a thousand fools do, of things that were said and done before their faces, that, truly, they did not mind them, because they were thinking of something else.  Why were they thinking of something else? and if they were, why did they come there?  The truth is, that the fools were thinking of nothing.  Remember the ‘hoc age,’ do what you are about, be what it will; it is either worth doing well, or not at all.  Wherever you are, have (as the low vulgar expression is) your ears and your eyes about you.  Listen to everything that is said, and see everything that is done.  Observe the looks and countenances of those who speak, which is often a surer way of discovering the truth than from what they say.  But then keep all those observations to yourself, for your own private use, and rarely communicate them to others.  Observe, without being thought an observer, for otherwise people will be upon their guard before you.