Only One Smile

If you have only one smile in you, give it to the people you love.  Don't be surly at home, then go out in the street and start grinning "Good morning" at total strangers.

-- Maya Angelou (1928-), African-American poet, memoirist, and civil rights activist, Singin' and Swingin' and Gettin' Merry Like Christmas, Chapter 5 (1976)