Enthusiasm is the yeast that makes your hopes shine to the stars. Enthusiasm is the sparkle in your eyes, the swing in your gait. The grip of your hand, the irresistible surge of will and energy to execute your ideas.
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.
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.