Musar sobre Provérbios 12:10

... And on this the Torah says (Exodus 13:7) "there will not be seen and there will not be found" - it will not be seen b'maaseh (in action) and will not be found b'machshava (in thought), rather one should anul it in his heart. The mitzvot have 3 categories: mitzvot of speech, of the heart and of action, as it is written (Deuteronomy 30:14) "in your mouth and in your heart to do it". Comes the Torah (instructing us) to anul it in the heart, corresponding to the mitzvot which are dependent on the heart. Comes the 'kabbalah' (instructing us) to eradicate it from the house or to burn it, corresponding to the mitzvot of action. And to say 'kol chamira', corresponding to mitzvot of speech. In this way the 3 categories of mitzvot are fulfilled through the prohibition of chametz, teaching you that the prohibition of chametz incorporates all the mitzvot... Just as the 'kabbalah' comes (instructing us) to eradicate chametz and (livdok) to check the house in nooks and in cracks, so too we are obligated to search and check the chambers of our inner being for bad (machshavas) intentions and bad (hirhurim) thoughts. Just as bedikat chametz (checking for chametz) is not valid by sunlight, nor by moonlight, nor by the light of a torch, but only by the light of a candle, so too the bedikah (checking) of the yetzer hara must be by the light of the neshama (soul) which is called 'ner' (candle), this is what is written (Proverbs 20:27) "the candle of Hashem is the soul of man, which searches the chambers of one's inner being.

“Do not harden your heart and shut your hand” (Deuteronomy 15:7). We were warned with this to remove the trait of cruelty from our souls, and to plant delightful saplings in it - [namely] reliable mercy and kindnesses, as it is written (Deuteronomy 28:9), “and you shall walk in His ways.” And because it is possible not to shut his hand and to grace the poor person, but not in the way of mercy - like the matter that is written (Proverbs 12:10), “but the mercies of the wicked are cruelty” - therefore it is written, “Do not harden your heart.” And the punishment for cruelty is bad and bitter, as will be explained in the Gate of Cruelty (no longer extant), with God’s help. And our Rabbis, may their memory be blessed, said (Shabbat 151b), “‘And He will show you mercy and have compassion on you and multiply you’ (Deuteronomy 13:18) - anyone who has compassion for the creatures will receive compassion from Heaven, and anyone who does not have compassion for the creatures will not receive compassion from Heaven.”

I DO not find this quality among righteous or superior men. But it is (to be found) in him whose nature resembles that of a lion, for he is one who is never sated. These are the ones of whom it is said (Deut. xxviii. 50), "A nation of fierce countenance." Upon my soul, this is a wholly detestable quality, whether (its measure be) great or small. It comes into being when the spirit of wrath prevails over a man. This quality is exercised for the purpose of wreaking vengeance upon enemies. There is no harm in making use of it in this manner, although the intelligent man ought not endeavor to be avenged upon his enemies. For this is not befitting. Thus saith the sage (Prov. xxiv. 17), "Rejoice not when thy enemy falleth." To make use of it in order that one may do evil to his fellow-man, to kill him, or to lay hold of the possessions of one who has given no offence, is reprehensible. From such as these may God preserve me, for of their ilk, the Saint said (Ps. cxxiv., i and 3), "If it had not been the Lord who was on our side, now may Israel say:" … "Then they had swallowed us up quick, when their wrath was kindled against us." A proof that this quality is only found in the wicked is the expression (Prov. xii. 10), "But the tender mercies of the wicked are cruel." Plato, the author of the laws in regard to vengeance, said, "He who desires to be revenged upon his enemies should add (a degree of) excellence to himself."