Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised.

Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised.

Courage is going from failure to failure without losing enthusiasm.

Courage is going from failure to failure without losing enthusiasm.

Enthusiasm is everything. It must be taut and vibrating like a guitar string.

Enthusiasm is everything. It must be taut and vibrating like a guitar string.

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.

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.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of enthusiasm.

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.

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.