Earnestness is enthusiasm tempered by reason.

Earnestness is enthusiasm tempered by reason.

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.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of enthusiasm.

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.

Enthusiasm is contagious. Be a carrier.

Enthusiasm is contagious. Be a carrier.

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 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.

None are so old as those who have outlived enthusiasm

None are so old as those who have outlived enthusiasm

Zeal without knowledge is fire without light.

Zeal without knowledge is fire without light.