In the dictionary of the seeker of truth there is no such thing as being "not successful." He is or should be an irrepressible optimist because of his immovable faith in the ultimate victory of Truth, which is God.
Mahatma GandhiSatan mostly employs comparatively moral instruments and the language of ethics to give his aims an air of respectability.
Mahatma GandhiNon-co-operation and civil disobedience are but different branches of the same tree called satyagraha.
Mahatma Gandhi