There are two levers for moving men - interest and fear.
As to moral courage, I have very rarely met with the two o'clock in the morning kind. I mean unprepared courage, that which is necessary on an unexpected occasion, and which, in spite of the most unforeseen events, leaves full freedom of judgement and decision.
It requires more courage to suffer than to die.
Courage isn't having the strength to go on - it is going on when you don't have strength.