St. John of the Cross "Dark night of the soul - CHAPTER IX

Of the signs by which it will be known that the spiritual person is walking along the way of this night and purgation of sense. part one

BUT since these aridities might frequently proceed, not from the night and purgation of the sensual desires aforementioned, but from sins and imperfections, or from weakness and lukewarmness, or from some bad humour or indisposition of the body, I shall here set down certain signs by which it may be known if such aridity proceeds from the aforementioned purgation, or if it arises from any of the aforementioned sins. For the making of this distinction I find that there are three principal signs.
2. The first is whether, when a soul finds no pleasure or consolation in the things of God, it also fails to find it in any thing created; for, as God sets the soul in this dark night to the end that He may quench and purge its sensual desire, He allows it not to find attraction or sweetness in anything whatsoever. In such a case it may be considered very probable that this aridity and insipidity proceed not from recently committed sins or imperfections. For, if this were so, the soul would feel in its nature some inclination or desire to taste other things than those of God; since, whenever the desire is allowed indulgence in any imperfection, it immediately feels inclined thereto, whether little or much, in proportion to the pleasure and the love that it has put into it. Since, however, this lack of enjoyment in things above or below might proceed from some indisposition or melancholy humour, which oftentimes makes it impossible for the soul to take pleasure in anything, it becomes necessary to apply the second sign and condition.
3. The second sign whereby a man may believe himself to be experiencing the said purgation is that the memory is ordinarily centred upon God, with painful care and solicitude, thinking that it is not serving God, but is backsliding, because it finds itself without sweetness in the things of God. And in such a case it is evident that this lack of sweetness and this aridity come not from weakness and lukewarmness; for it is the nature of lukewarmness not to care greatly or to have any inward solicitude for the things of God. There is thus a great difference between aridity and lukewarmness, for lukewarmness consists in great weakness and remissness in the will and in the spirit, without solicitude as to serving God; whereas purgative aridity is ordinarily accompanied by solicitude, with care and grief as I say, because the soul is not serving God. And, although this may sometimes be increased by melancholy or some other humour (as it frequently is), it fails not for that reason to produce a purgative effect upon the desire, since the desire is deprived of all pleasure and has its care centred upon God alone. For, when mere humour is the cause, it spends itself in displeasure and ruin of the physical nature, and there are none of those desires to sense God which belong to purgative aridity. When the cause is aridity, it is true that the sensual part of the soul has fallen low, and is weak and feeble in its actions, by reason of the little pleasure which it finds in them; but the spirit, on the other hand, is ready and strong.