Prayer is not an old woman's idle amusement. Properly understood and applied, it is the most potent instrument of action.
Source: Non-Violence in Peace and War, vol. 2, ch. 77, 1948.
-- Mahatma Gandhi, (Oct 2 1869-1948), Indian philosopher; He was known for his fasts and civil disobedience which played a role in the struggle for Indian independence.