Rabbi Judah the Prince said: "Which is the right course that a man should choose for himself? That which is an honor to him and elicits honor from his fellow men." --Avot 2:1

Rabbi Jose said: “Let the property of your fellow man be as dear to you as your own.” --Avot 2:17

“But if three have eaten at one table and have spoken over it words of the Torah, it is as if they had eaten from the table of G-d, for it is written (Ezekiel 41.22) 'He said to me, 'This is the table which is before Hashem.'” --Avot 3:4

“A person may tend to deliberate whether he should or should not give tzedakah (charity). That is why the Torah exhorts, 'Do not close your hand to the poor.'” --Rashi, Deuteronomy 15:7

“I constantly place the presence of G-d before my eyes” (Psalms 16:8). This is a fundamental rule in Torah and behavior of the righteous who walk in the path of G-d. --Shulchan Aruch Orach Chaim 1:1

“Judge every person favorably.” – Avot 1:6

“A person should be humble and as flexible as Hillel, rather than as stern and strict as Shammai.” --Talmud, Shabbos 30b