"One of the key words Gandhi used in expressing the meaning of nonviolence was ahimsa, literally ‘non-harm,’ the refusal to hurt others. It's the rock bottom of nonviolence. A second key word was satyagraha (a combination of the words for ‘truth’ and ‘holding firmly’) sometimes called ‘truth force,’ holding on to what is true and good, striving to bring about more humane conditions for people and society. King called it ‘soul force.’"  —Dr. Gerard Vanderhaar