_Direct._ VI. Keep out passion from your disputes, and in the management of all your controversies in religion. For though passion be useful both antecedently to the resolution of the will, and consequently to the effectual execution of its resolutions, yet it is commonly a very great seducer of the understanding, and strangely blindeth and perverteth the judgment;[122] so that a passionate man is seldom so far from the truth, as when he is most confident he is defending it. When passion hath done boiling, and the heart is cooled, and leaveth the judgment to do its work without any clamour or disturbance, it is strange to see how things will appear to you to be quite of another tendency and reason, than in your passion you esteemed them. _Direct._ VII. Keep up a sense of the evil and danger of both extremes; and be not so wholly intent upon the avoiding of one extreme, as to be fearless of the other. The narrow minds of unexperienced men are hardly brought to look on both sides them, and to be duly sensible of the danger of both extremes; but while they are taken up only with the hating and opposing one sort of errors, they forget those on the other side. And usually the sin or error which we observe not, is more dangerous to us than that which we do observe (if the wind of temptation set that way). _Direct._ VIII. When you detect any ancient error or corruption, inquire into its original; and see whether reformation consist not rather in a restitution of the primitive state, than in an extirpation of the whole. Even in popery itself there are many errors and ill customs, which are but the corruption of some weighty truth, and the degenerating of some duty of God's appointment; and to reduce all, in such cases, to the primitive verity, is the way of wise and true reformation; and not to throw away that which is God's, because it is fallen into the dirt of human depravation. But in cases where all is bad, there all must be rejected.