The Essence of the Work in Torah and Mitzvot
By accustoming themselves to keeping Torah and the Mitzvot [actions for the sake of others] in order to bring contentment to their Maker, they gradually depart from the bosom of the natural creation and acquire a second nature, being love of others.
– Baal HaSulam, Matan Torah (The Giving of the Torah), Item 13
The Creator gave us Torah and Mitzvot, which we were commanded to do only in order to bestow contentment upon the Creator. Had it not been for the engagement in Torah and Mitzvot Lishma (for Her Name), to bring contentment to the Creator with them, and not to benefit ourselves, there would have been no tactic in the world that could help us invert our nature.
– Baal HaSulam, “A Speech for the Completion of The Zohar”