Success consists of going from failure to failure without loss of enthusiasm.
Opposition embitters the enthusiast but never converts him.
Nothing great was ever achieved without enthusiasm.
Whenever the true objects of action appear, they are to be heartily sought. Enthusiasm is the height of man; it is the passing from the human to the divine.
I prefer the folly of enthusiasm to the indifference of wisdom.
None are so old as those who have outlived enthusiasm.
