אַרְבַּע מִדּוֹת בַּתַּלְמִידִים. מַהֵר לִשְׁמֹעַ וּמַהֵר לְאַבֵּד, יָצָא שְׂכָרוֹ בְהֶפְסֵדוֹ. קָשֶׁה לִשְׁמֹעַ וְקָשֶׁה לְאַבֵּד, יָצָא הֶפְסֵדוֹ בִשְׂכָרוֹ. מַהֵר לִשְׁמֹעַ וְקָשֶׁה לְאַבֵּד, חָכָם. קָשֶׁה לִשְׁמֹעַ וּמַהֵר לְאַבֵּד, זֶה חֵלֶק רָע:
Il existe quatre middoth (types) de disciples: rapides à comprendre et rapides à oublier —son gain est annulé par sa perte. [Car, puisqu'il oublie ce qu'il apprend, à quoi sert sa compréhension rapide?—c'est pourquoi sa perte est plus grande que son gain.]; comprendre avec difficulté et oublier avec difficulté—sa perte est annulée par son gain, [puisque ce qu'il comprend malgré sa difficulté lui reste. Une application pratique. S'il y a deux disciples devant nous et que nous ne pouvons enseigner qu'un seul, l'oublié avec difficulté l'emporte sur le rapide à comprendre.]; rapide à comprendre et à oublier avec difficulté—un sage (disciple);. Comprendre avec difficulté et vite oublier—c'est "une mauvaise partie". [Il n'est pas possible de dire ici «chassé» ou méchant, car cela ne dépend pas du libre choix d'un homme, mais c'est quelque chose avec lequel il est né.]
Kedushat Levi
When a person applies this kind of reasoning and as a result eschews sin in favour of carrying out what he knows to be G’d’s will, even the evil he had had in mind originally becomes a כסא, “throne, supporting stool,” for the good he does. When G’d created evil [only in its most primitive stage, ברא, Ed.] in the first place, He did so in order to provide His creatures with this additional merit when he decides to carry out G’d’s will although he had been given another option. By creating evil, G’d had, so to speak, placed man at a distance from Him. When man has to cover this distance in order to approach G’d more closely, G’d derives far more satisfaction from man’s efforts to serve Him than He would if such “service” would be “natural.” Any תענוג, pleasurable experience, regardless if it is experienced in our spheres of the universe or in the celestial spheres, retains its flavour only when it is not a continuously, repetitive experience. When it is experienced at relatively infrequent intervals it is especially welcome as such. When G’d observes how man in the attempt to come closer to His essence, has to break through repeated obstacles, this is what pleases G’d.
It is the tzaddik’s challenge to sublimate all those thoughts that could so easily have led him astray instead of confirming him in his pursuit of קרבות ה', close affinity to Hashem.
It is altogether not surprising that in this quest, even the tzaddik from time to time is assaulted by what we would term “unworthy thoughts;” this happens in order to afford him an opportunity to refine and sublimate such thoughts when he stands in prayer before the Almighty. Another challenge facing the tzaddik is to try and elevate others, so that they too will come closer to their Creator. If he were to be concerned exclusively with purifying his own soul and personality, he would have left unused a channel that could provide G’d with pleasure, a serious deficiency [as we know from Avot 5,12 where people who give charity without endeavouring to involve others in the same mitzvah are not complimented for their charitable activities. Ed.] If and when the tzaddik engages in helping others to establish closer ties with their Creator, G’d’s pleasure of his service will keep increasing even though he has been serving G’d constantly, without interruption. When applied to the symbolism expressed by lighting the menorah and keeping it burning, the commandment of ואתה תצוה וגו', contains the challenge addressed to every true servant of the Lord to elevate both himself and his peers.
In kabbalistic parlance every thought formulated, reflects the letters it contains if it were committed to paper or parchment. Alien thoughts, i.e. unworthy thoughts, are considered as “broken letters.” The word כתית, crushed, symbolizes such thoughts, and the function of the servant of G’d, primarily the priest representing the collective soul of the Jewish people, is to elevate, i.e. להעלות, to sublimate such unworthy thoughts so that they all point in the direction of the נר תמיד, “the eternal flame,” expressing the desire for communion with the Creator. That expression reflects the satisfaction, pleasure derived by the Creator from efforts by His people who crave His closeness.