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.

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.

Earnestness is enthusiasm tempered by reason.

Earnestness is enthusiasm tempered by reason.

Knowledge is power, but enthusiasm pulls the switch.

Knowledge is power, but enthusiasm pulls the switch.

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.

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.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of enthusiasm.

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.

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.