"Nonviolence has two faces, that of cooperating with good and that of non-cooperating with evil. These two faces, or call them two edges to the sword of Satyagraha, have been expressed throughout history as what Gandhi would call Constructive Programme, where you create things, and make corrections in your own community, and what I like to call obstructive program, where you dig in your heels and refuse to go along with others' attempts to weaken or exploit you."  --Michael N. Nagler