4. Use still greater precautions in regard to ascetical works. Many of these are carelessly written, confound precepts with counsels, badly define the virtues by not showing the limits beyond which they become extravagances, and entertain the reader with trifling and purely exterior practices that are more apt to flatter self-love than to reform the heart. 5. It has been remarked very justly by a learned theologian that the ignorance and indiscreet zeal of certain writers of ascetical books have furnished the heretics of later times with arms to attack our holy religion and to turn it into ridicule. 6. A judicious author expresses himself thus on the same subject: “In order to write on spiritual matters it is not enough to have great piety,—great learning is also necessary. A man actuated by the best motives in the world may yet have strange delusions, and feed his imagination with devout extravagances.” An author should be equally well versed in theory and experienced in practice, otherwise he will err either in regard to principles or to their application. There is a well known saying generally attributed to Saint Thomas: “If a man be good and holy let him pray for us; if he be learned too, then let him teach us.” It is essential, in matters of religion especially, to give none but true and precise ideas, or else they will do more harm than good. Doctrines that are not exact create scruples in weak souls and invite the criticisms of intelligent Christians, whilst they excite the railleries of free-thinkers and furnish arguments to unbelievers. 7. Almost every day we find ascetical works published which contain many inaccuracies of the kind described. Exercise great care, therefore, in the selection of this kind of reading or you may injure your soul instead of sanctifying it. The safest course is to consult your director on the subject. PART SECOND. INTERIOR LIFE. IX. HOPE. Casting all your solicitude upon Him for He hath care of you. (St. Petr., Ep. I., c. V., v. 7.) Let Thy mercy descend upon us according to the trust we have placed in Thee. (Cant. Saint Ambrose.) 1. “Blessed is the man who hopes in the Lord,” says the Holy Spirit. The weakness of our souls is often attributable to lukewarmness in regard to the Christian virtue of hope. 2. Hold fast to this great truth: he who hopes for nothing will obtain nothing; he who hopes for little will obtain little; he who hopes for all things will obtain all things. 3. The mercy of God is infinitely greater than all the sins of the world. We should not, then, confine ourselves to a consideration of our own wretchedness, but rather turn our thoughts to the contemplation of this divine attribute of mercy.