17. To those, then, who can make use of their understanding, I say that they are not to spend the whole time in that way; for though it be most meritorious, yet they must not, when prayer is sweet, suppose that there never will be a Sunday or a time when no work ought to be done. They think it lost time to do otherwise; but I think that loss their greatest gain. Let them rather, as I have said, [8] place themselves in the presence of Christ, and, without fatiguing the understanding, converse with Him, and in Him rejoice, without wearying themselves in searching out reasons; but let them rather lay their necessities before Him, and the just reasons there are why He should not suffer us in His presence: at one time this, at another time that, lest the soul should be wearied by always eating of the same food. These meats are most savoury and wholesome, if the palate be accustomed to them; they will furnish a great support for the life of the soul, and they have many other advantages also. 18. I will explain myself further; for the doctrine of prayer is difficult, and, without a director, very hard to understand. Though I would willingly be concise, and though a mere hint is enough for his clear intellect who has commanded me to write on the subject of prayer, yet so it is, my dulness does not allow me to say or explain in a few words that which it is so important to explain well. I, who have gone through so much, am sorry for those who begin only with books; for there is a strange difference between that which we learn by reading, and that which we learn by experience. 19. Going back, then, to what I was saying. We set ourselves to meditate upon some mystery of the Passion: let us say, our Lord at the pillar. The understanding goeth about seeking for the sources out of which came the great dolours and the bitter anguish which His Majesty endured in that desolation. It considers that mystery in many lights, which the intellect, if it be skilled in its work, or furnished with learning, may there obtain. This is a method of prayer which should be to everyone the beginning, the middle, and the end: a most excellent and safe way, until our Lord shall guide them to other supernatural ways.