"What a mitzvah it was for Sarah to help that elderly woman cross the street."

"Doing a mitzvah without feeling, and only because G-d told you to do it, is NOT AT ALL what we should be striving for." (source)

"On our kibbutz, we keep all the agricultural mitzvot laid down in the Torah." (Glinert)

"...and don't forget to call your aunt—it's a big mitzvah." (Glinert)