Sometimes, you have to step outside of the person you've been and remember the person you were meant to be. The person you want to be. The person you are.
If we suppose a sufficient righteousness and intelligence in men to produce presently, from the tremendous lessons of history, an effective will for a world peace - that is to say, an effective will for a world law under a world government - for in no other fashion is a secure world peace conceivable - in what manner may we expect things to move towards this end? . . . It is an educational task, and its very essence is to bring to the minds of all men everywhere, as a necessary basis for world cooperation, a new telling and interpretation, a common interpretation, of history.
While there is a chance of the world getting through its troubles, I hold that a reasonable man has to behave as though he were sure of it. If at the end your cheerfulness in not justified, at any rate you will have been cheerful.
The doctrine of the Kingdom of Heaven, which was the main teaching of Jesus, is certainly one of the most revolutionary doctrines that ever stirred and changed human thought.