When someone works for less pay than she can live on — when, for example, she goes hungry so that you can eat more cheaply and conveniently — than she has made a great sacrifice for you, she has made of a gift of some part of her abilities, her health, and her life.
Nickel and Dimed: On (Not) Getting By in America (ed. Macmillan, 2010) - ISBN: 9781429926645