One ought to be generous and merciful, as HaShem is: Shabbat 133b
If one is merciful to others, HaShem will have mercy on him; the converse is also true: Shabbat 151b
HaShem loves people who don't get angry: Pesachim 113b
HaShem loves people who don't get drunk: Pesachim 113b
One ought to act in a way which others will appreciate: Nedarim 22b
Those who aren't jealous of others don't rot after death: Shabbat 152b
When two people part, they should teach each other a law, so that they don't forget each other: Eruvin 64a
One shouldn't accept gifts, and only minimally if at all: Berachot 10b
One should change clothing between cooking and serving one's master: Shabbat 119a
The importance of speaking clearly: Eruvin 53b
The Medean custom of kissing the back of another's hand: Berachot 8b
Giving Charity in public: Chagigah 5a
Killing an insect in public: Chagigah 5a
Spitting in public: Chagigah 5a
Treating a wealthy person with respect: Eruvin 85b-86a
Nail-cutting is not considered disgusting: Moed Katan 18a
Taking care to greet others first: Shabbat 89a
For a servant to greet his master: Shabbat 89a
Lack of respect for elders caused Destruction of Jerusalem: Shabbat 119b
Treating the property of others with care: Bava Metzia 24a
One ought not to spend too much time with those who aren't careful with Torah, especially with Kohanim like that, as they will cause him to sin: Nedarim 20a
When people sit together, the greater of the two sits on the right. With three, the greatest is in the middle, the second is on the right: Eruvin 54b
Considering the issue of strain vs. the issue of respect: Eruvin 54b
Learning lessons in manners from the animals: Eruvin 100b