This classic Mussar work teaches that one who truly loves others will naturally receive every person with a joyful, open face. The pleasant countenance is described as a visible sign of the love of fellow human beings written in one's heart.
וּכְשֶׁאָדָם הַצַּדִּיק רוֹצֶה בִּבְנֵי אָדָם, וּבְנֵי אָדָם רוֹצִים בּוֹ – גַּם הַמָּקוֹם רוֹצֶה בּוֹ. וְגַם שׂוֹנְאָיו מַשְׁלִימִים אִתּוֹ, כְּדִכְתִיב (משלי טז ז): ״בִּרְצוֹת יְיָ דַּרְכֵי אִישׁ, גַּם אוֹיְבָיו יַשְׁלִם אִתּוֹ״. וּכְמוֹ שֶׁיָּדַעְתָּ מֵרְצוֹת אֲבִימֶלֶךְ בְּאַבְרָהָם, וּמִשֶּׁהִשְׁלִימוּ אִתּוֹ (בראשית רבה נד א). וְנֶאֱמַר (משלי טז טו): ״בְּאוֹר פְּנֵי מֶלֶךְ חַיִּים, וּרְצוֹנוֹ כְּעָב מַלְקוֹשׁ״. וּמְאוֹד מְאוֹד מִדָּה נָאָה הִיא לָאָדָם, שֶׁיְּהֵא מָלֵא רָצוֹן, וּמְבַטֵּל דַּעְתּוֹ מִפְּנֵי דַּעַת חֲבֵרוֹ. וְדָבָר זֶה גּוֹרֵם שֶׁהוּא נֶאֱהָב לַכֹּל, כְּשֶׁהוּא עוֹשֶׂה כִּרְצוֹן אִישׁ וָאִישׁ. וְהָאִישׁ הַזֶּה קָרוֹב מְאוֹד לְדַרְכֵי הַתְּשׁוּבָה, כִּי כְּשֶׁהוּא אוֹחֵז בַּמַּעֲשֶׂה הָרַע וּבָא חֲבֵרוֹ לְהוֹכִיחוֹ – הוּא מִתְרַצֶּה מִיָּד לַעֲזֹב הָרָע, וְחוֹזֵר לַמּוּטָב. נִמְצָא שֶׁיֵּשׁ לוֹ נַחַת רוּחַ בְּעַצְמוֹ, כְּשֶׁהוּא מוֹדֶה וְעוֹזֵב דְּרָכָיו הָרָעִים, וְגַם יֵשׁ נַחַת רוּחַ לַחֲבֵרָיו הַמִּתְחַבְּרִים אִתּוֹ.
When a righteous man likes people and people are pleased with him, then the Holy One, Blessed be He, also is pleased with him. For thus did they say : "One with whom men are pleased, God is pleased" (Aboth 3:10). And even his enemies make peace with him, as it is written : "When a man's ways please the Lord, He maketh his enemies to be at peace with him" (Prov. 16:7), as you know concerning Abimelech and Abraham … (Genesis Rabbah 54a). And when they make peace with him it is said "In the light of the King's countenance is life, and his favour is as a cloud of the latter rain" (Prov. 16:15). A very fine quality for man is to be filled with graciousness and to abandon his opinion in the face of the opinion of his companion (when he senses that his companion is right). And this type of conduct will cause him to be beloved, for he does what pleases every man. And such a man is very near to the paths of repentence, for if he does an evil deed, and his companion comes and rebukes him, he very quickly consents to abandon his evil way and to return to the good. The result is that he himself obtains self satisfaction in confessing his wrong and abandoning his evil ways, and his companions who associate with him are pleased.