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.

Enthusiasm is the leaping lightning, not to be measured by the horse- power of the understanding.

Enthusiasm is the leaping lightning, not to be measured by the horse- power of the understanding.

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

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

If you have zest and enthusiasm you attract zest and enthusiasm. Life does give back in kind.

If you have zest and enthusiasm you attract zest and enthusiasm. Life does give back in kind.

It's faith in something and enthusiasm for something that makes a life worth living.

It's faith in something and enthusiasm for something that makes a life worth living.

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.

Enthusiasm is excitement with inspiration, motivation, and a pinch of creativity.

Enthusiasm is excitement with inspiration, motivation, and a pinch of creativity.

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.

Success is not the result of spontaneous combustion, you must set yourself on fire first.

Success is not the result of spontaneous combustion, you must set yourself on fire first.