53. I don’t call you from a sober use of human learning, but I would fain persuade you to think nothing worthy of your notice in books and study, but that which applies to the amendment of the heart, which makes you more holy, more divine, more heavenly, than you would be without it. You want nothing, but to have the corruption of your natural birth removed, to have the nature, life, and spirit of Jesus Christ derived into you. As this is all you want, so let this be all that you seek from books, study, or men. This is the only certain way to become eminent divines, instructed to the kingdom of heaven. And above all, let me tell you that the book of all books is your own heart, in which are written and engraven the deepest lessons of divine instruction. Learn therefore to be deeply attentive to the presence of God in your heart, who is always speaking, always instructing, always illuminating that heart that is attentive to him: and be assured of this, that so much as you have of inward attention to God, of love and adherence to his holy light and Spirit, so much as you have of real, unaffected humility and meekness; so much as you are dead to your own will, so much as you have of purity of heart; so much and no more, nor any further, do you see and know the truths of God. These virtues are the only eyes, and ears and senses, by which you will understand every thing in scripture, in that manner in which God would have it understood, both for your own good, and the good of other people.