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.

Earnestness is enthusiasm tempered by reason.

Earnestness is enthusiasm tempered by reason.

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.

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.

Zeal without knowledge is fire without light.

Zeal without knowledge is fire without light.

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.

Nothing great was ever achieved without enthusiasm.

Nothing great was ever achieved without enthusiasm.

Courage is going from failure to failure without losing enthusiasm.

Courage is going from failure to failure without losing enthusiasm.

Enthusiasm is contagious. Be a carrier.

Enthusiasm is contagious. Be a carrier.