Direct. VI. Digest all that you know, and turn it into holy habits, and expect that success first on yourselves, which if you were to preach you would expect in others. Remembering that knowing is not the end of knowing; but it is as eating to the body, where health, and strength, and service are the end.[318]
Every truth of God is his candle which he sets up for you to work by; it is as food that is for life and action. You lose all the knowledge which ends in knowing. To fill your head and common-place book is not all that you have to do. But to fortify, and quicken, and inflame your hearts. Good habits are the best provision for a preacher. The habits of mind are better than the best library. But if the habits of heavenly love, and life in the heart, do not concur, the heart and life of a preacher and a scholar are wanting still, for all your knowledge. Study Paul's words, 1 Cor. viii. 1, "Knowledge puffeth up, but charity edifieth." If he had said that knowledge edifieth others, and charity saveth ourselves, he would have said nothing that is strange. But even as to edification charity hath the precedency.
Direct. VII. Yea, see that you excel the unlearned as much in holiness as you do in knowledge: unless you will persuade them that your knowledge is a useless, worthless thing; and unless you would be judged as unprofitable servants.
Every degree of knowledge is for a further degree of holiness: ten talents must be improved to ten more. They that know and do not, are beaten with many stripes. The devil's scholars look on the godly that are unlearned with hatred and disdain, and preach to their discouragement and disgrace, and strive to set and keep true godliness in the stocks. But Christ's ministers love holiness wherever they see it, and are ashamed to think that the unlearned should be more holy and heavenly than they; and strive to go beyond them as much in the use and ends of knowledge, as in knowledge itself; and with Austin lament, that while the unlearned take heaven by violence, the learned are thrust out into hell, as thinking it is their part to know and teach, and other men's to practise.
Direct. VIII. Cast not away a moment of your precious time in idleness, or impertinencies; but follow your work diligently, and with all your might.
I mean not that you should overdo, and overthrow your brains and bodies, nor forbear such sober exercise as is most necessary to your health; for a sick body is an ill companion for a student, and much more a crazed brain. But time-wasters are lovers of pleasure or idleness, more than of knowledge and holiness: and wisdom falleth not into idle, sluggish, dreaming souls. If you think it not worth your painfullest and closest studies, you must take up with idle ignorance, and go abroad with swelling titles and empty brains, as the deceivers and the scourgers of the church.
Direct. IX. Keep up a delight in all your studies, and carry them on not in an unwilling weariness: and, if it be not by notable error in matter or method, gratify your delight with such things as you are best pleased with, though they bring some smaller inconvenience; because else your weariness may bring much more.
I know that a delight in sin and vanity is not to be gratified; and force must be used with a backward mind in case of necessity and weight. But if it be but in the variety of subjects, and the choice of pleasing studies which are profitable, though simply some other might be fitter, something is to be yielded to delight. But especially the heart must be got to a delight in holy things: and then, time will be improved; the memory will be helped; much will be done; and you will persevere; and it will preserve the mind from temptations to needless recreations, and from the deadly plague of youthful lusts, when your daily labour is a greater pleasure to you.
Direct. X. Get some judicious man to draw you up the titles of a threefold common-place book: one part for definitions, axioms, and necessary doctrines; another part for what is useful for ornament and oratory; and another for references as a common index to all the books of that science which you read: for memory will not serve for all.
Ordinarily students have not judgment enough to form their own common-place books till they are old in studies, and have read most of the authors which they would remember; and therefore the young must here have a judicious helper. And when they have done, injudiciousness will be apt to fill it with less necessary things, and to make an unmeet choice of matter, if they have not care and an instructor.