Which treats of the first kind of words that the recollected spirit sometimes forms within itself. Describes the cause of these and the profit and the harm which there may be in them.

 11. From what has been said, it is evident that these successive locutions may proceed in the understanding from three causes, namely: from the Divine Spirit, Who moves and illumines the understanding; from the natural illumination of the same understanding; and from the devil, who may speak to the soul by suggestion. To describe now the signs and indications by which a man may know when they proceed from one cause and when from another would be somewhat difficult, as also to give examples and indications. It is quite possible, however, to give some general signs, which are these. When in its words and conceptions the soul finds itself loving God, and at the same time is conscious not only of love but also of humility and reverence, it is a sign that the Holy Spirit is working within it, for, whensoever He grants favours, He grants them with this accompaniment. When the locutions proceed solely from the vivacity and brilliance of the understanding, it is the understanding that accomplishes everything, without the operation of the virtues (although the will, in the knowledge and illumination of those truths, may love naturally); and, when the meditation is over, the will remains dry, albeit inclined neither to vanity nor to evil, unless the devil should tempt it afresh about this matter. This, however, is not the case when the locutions have been prompted by a good spirit; for then, as a rule, the will is afterwards affectioned to God and inclined to well-doing. At certain times, nevertheless, it will happen that, although the communication has been the work of a good spirit, the will remains in aridity, since God ordains it so for certain causes which are of assistance to the soul. At other times the soul will not be very conscious of the operations or motions of those virtues, yet that which it has experienced will be good. Wherefore I say that the difference between these locutions is sometimes difficult to recognize, by reason of the varied effects which they produce; but these which have now been described are the most common, although sometimes they occur in greater abundance and sometimes in less. But those that come from the devil are sometimes difficult to understand and recognize, for, although it is true that as a rule they leave the will in aridity with respect to love of God, and the mind inclined to vanity, self-esteem or complacency, nevertheless they sometimes inspire the soul with a false humility and a fervent affection of the will rooted in self-love, so that at times a person must be extremely spiritually-minded to recognize it. And this the devil does in order the better to protect himself; for he knows very well how sometimes to produce tears by the feelings which he inspires in a soul, in order that he may continue to implant in it the affections that he desires. But he always strives to move its will so that it may esteem those interior communications, attach great importance to them, and, as a result, give itself up to them and be occupied in that which is not virtue, but is rather the occasion of losing virtue as the soul may have.