The importance is getting to something truthful and in that moment can only be in that moment. I don't like to use the word "improvise," but it's a continual writing of the film.
To become indignant at [people's] conduct is as foolish as to be angry with a stone because it rolls into your path. And with many people the wisest thing you can do, is to resolve to make use of those whom you cannot alter.
Since periods of great change, such as the present one, come so rarely in human history, it is up to each of us to make the best use of our time to help create a happier world.