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 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.

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.

Courage is going from failure to failure without losing enthusiasm.

Courage is going from failure to failure without losing enthusiasm.

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.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of enthusiasm.

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

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

Zeal without knowledge is fire without light.

Zeal without knowledge is fire without light.