Avot5: 12
אַרְבַּע מִדּוֹת בַּתַּלְמִידִים: מַהֵר לִשְׁמוֹעַ וּמַהֵר לְאַבֵּד — יָצָא שְׂכָרוֹ בְהֶפְסֵדוֹ; קָשֶׁה לִשְׁמוֹעַ וְקָשֶׁה לְאַבֵּד — יָצָא הֶפְסֵדוֹ בִשְׂכָרוֹ; מַהֵר לִשְׁמוֹעַ וְקָשֶׁה לְאַבֵּד — חָכָם. קָשֶׁה לִשְׁמוֹעַ וּמַהֵר לְאַבֵּד — זֶה חֵלֶק רָע.
There are four types of students: (1) [One who is] quick to grasp and quick to lose, his reward is offset by his loss. (2) [One who is] slow to grasp and slow to lose, his loss is offset by his reward. (3) [One who is] quick to grasp and slow to lose [is] a wise person. (4) [One who is] slow to grasp and quick to lose, this is a bad lot.
Avot5: 13
אַרְבַּע מִדּוֹת בְּנוֹתְנֵי צְדָקָה: הָרוֹצֶה שֶׁיִּתֵּן וְלֹא יִתְּנוּ אֲחֵרִים — עֵינוֹ רָעָה בְּשֶׁל אֲחֵרִים; יִתְּנוּ אֲחֵרִים וְהוּא לֹא יִתֵּן — עֵינוֹ רָעָה בְשֶׁלּוֹ; יִתֵּן וְיִתְּנוּ אֲחֵרִים — חָסִיד; לֹא יִתֵּן וְלֹא יִתְּנוּ אֲחֵרִים — רָשָׁע.
There are four types of charitable donors: (1) One who desires that he will give but others should not give, looks disparagingly at [the money] of others. (2) [One who desires that] others should give but he will not give, he is stingy with his own [money]. (3) [One who desires that] he will give and others should give [is] a pious person. (4) [One who desires that] he will not give and others should not give [is] a wicked person.