"You shall rise before the aged and show deference to the old." ~~ Leviticus (Vayikra) 19:32
"Your elder brother should be respected like your father." ~~ Yemenite Proverb
"Teach a child good manners during babyhood." ~~ Nachman of Bratslav
"Never enter a neighbor’s house unwarned." ~~ Derekh Eretz R.
"If you do a man a favor, do not regard it as a debt he must repay!" ~~ Mishle Shua’lim
"Who eats even plain bread and salt with his friend should be grateful to him." ~~ Tanna Deve Eliyahu R.
"The Torah teaches incidentally good manners." ~~ Ishmael b. Elisha
"Do not offer your food to one who has no appetite for it!" ~~ Mivchar Hapeninim
"Without manners no Torah, without Torah no manners." ~~ Eleazar b. Azariah, Mishna: Avot
"Good manners is thoughtfulness of God and of men." ~~ Jehiel Anav
"Do not be joyful almong the mourners!" ~~ Mishle Agur
"If a guest enters your home, ask him no quesitons of the Torah unless you know that he can answer! " ~~ Sefer Chassidim