The Torah begins with generous behavior [Gd clothing Adam and Eve] and ends with generous behavior [Gd burying Moses]: Sotah 14a
Acts of kindness are considered greater than acts of Tzedakah, for they are done with the body, even to those who aren't needy, and even to the dead: Succah 49b
A person who is Righteous to Heaven, but evil to others, is an Evil Righteous Person. One who is wicked to Heaven, but good to others, is a Wicked Person who isn't Evil: Kiddushin 40a
Source for the Mitzvah of general generous acts: Bava Metzia 30b
Good deeds are considered to be acts of wisdom: Nedarim 32b