Zeal without knowledge is fire without light.

Zeal without knowledge is fire without light.

Knowledge is power, but enthusiasm pulls the switch.

Knowledge is power, but enthusiasm pulls the switch.

None are so old as those who have outlived enthusiasm.

None are so old as those who have outlived enthusiasm.

Enthusiasm is contagious. Be a carrier.

Enthusiasm is contagious. Be a carrier.

Courage is going from failure to failure without losing enthusiasm.

Courage is going from failure to failure without losing enthusiasm.

We act as though comfort and luxury were the chief requirements of life, when all that we need to make read more

We act as though comfort and luxury were the chief requirements of life, when all that we need to make us really happy is something to be enthusiastic about.

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.

Every production of genius must be the production of enthusiasm.

Every production of genius must be the production of 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.