None are so old as those who have outlived enthusiasm.

None are so old as those who have outlived enthusiasm.

Enthusiasm is the mother of effort, and without it nothing great was ever achieved.

Enthusiasm is the mother of effort, and without it nothing great was ever achieved.

Earnestness is enthusiasm tempered by reason.

Earnestness is enthusiasm tempered by reason.

Nothing great was ever achieved without enthusiasm.

Nothing great was ever achieved without enthusiasm.

In things pertaining to enthusiasm, no man is sane who does not know how to be insane on proper occasions.

In things pertaining to enthusiasm, no man is sane who does not know how to be insane on proper occasions.

I prefer the folly of enthusiasm to the indifference of wisdom.

I prefer the folly of enthusiasm to the indifference of wisdom.

For every sale you miss because you're too enthusiastic, you will miss a hundred because you're not enthusiastic enough.

For every sale you miss because you're too enthusiastic, you will miss a hundred because you're not enthusiastic enough.

There is a real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

There is a real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

Catch on fire with enthusiasm and people will come for miles to watch you burn.

Catch on fire with enthusiasm and people will come for miles to watch you burn.