Be thou incapable of change in that which is right, and men will rely upon thee. Establish unto thyself principles of action; and see that thou ever act according to them. First know that thy principles are just, and then be thou.
Lance Armstrong, the famous cyclist and more importantly, cancer survivor, has said 'if you ever get a second chance for something, you've got to go all the way.'
The evil that is in the world almost always comes of ignorance, and good intentions may do as much harm as malevolence if they lack understanding.