And yet, strange to say, though we all do acknowledge this law of nature in everything outside of ourselves, we fail to apply it to ourselves, and especially to our souls. In matters simply pertaining to the body we do indeed know that the cause will produce its effect. If we sow the seed of some fatal disease in ourselves we expect it to break out and run its course; we do not believe that, as a rule, tears or even prayers are going to stop it. {407} But when it comes to the soul, many Christians seem to think that everything regarding it may be shifted at their own will; that they may go on for years sowing the seeds of all kinds of abominable vices in their souls, and that, later on, whenever they may desire, all this work can be undone in a moment, and those souls, which sin has rotted through and through, can be put right back where they were as they came from the baptismal font, or even set on a perfect level with those in which the seed of every virtue has been implanted and carefully nurtured from childhood. Ah! my dear brethren, this is a great and a terrible mistake. Hear the words in which St. Paul continues: "He that soweth in his flesh, of the flesh also shall reap corruption; but he that soweth in the spirit, of the spirit shall reap life everlasting." "He that soweth in his flesh, of the flesh also shall reap corruption." Here is the great evil of sin, which repentance, however sincere, cannot utterly undo. True contrition will, no doubt, especially if accompanied by the Sacrament of Penance, take away the guilt of sin; but unless it be very intense, and accompanied by an extraordinary love of God, like that of the great saints, it will not, in releasing from guilt, remedy all the deformity which long-continued habits of vice have worked in the soul. Yes, sorrow may come in such an overflowing torrent as to break down and sweep away all obstacles in its path; but how often does it come so? To have such sorrow for sin is a rare and remarkable grace from God which the sinner has no right to expect. {408} All this is specially true, as the words of the Apostle teach us, of the sins of the flesh, such as drunken-ness and impurity. The body will hang on to sin after the soul has given it up, and will drag the soul again down with it. Oh! that those who are addicted to these horrible sensual habits would realize their danger, and feel the net which the flesh has been weaving round their spirit. But no; they go on from week to week, from month to month, making, it may be, now and then a feeble effort to escape; but too often it can be seen after each confession, though they are indeed on their feet again, that the odds against them are greater than ever, and that their weapons are dropping out of their hands.