Every memorable act in the history of the world is a triumph of enthusiasm. Nothing great was ever achieved without it because it gives any challenge or any occupation, no mater how frightening or difficult, a new meaning. Without enthusiasm you are doomed to a life of mediocrity but with it you can accomplish miracles.
It is energy -- the central element of which is will -- that produces the miracle that is enthusiasm in all ages. Everywhere it is what is called force of character and the sustaining power of all great action.
Why were the saints, saints? Because they were cheerful when it was difficult to be cheerful, patient when it was difficult to be patient; and because they pushed on when they wanted to stand still, and kept silent when they wanted to talk, and were agreeable when they wanted to be disagreeable. That was all. It was quite simple and always will be.