Earnestness is enthusiasm tempered by reason.

Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised.

Enthusiasm is the leaping lightning, not to be measured by the horse- power of the understanding.

Enthusiasm is the yeast that makes your hopes shine to the stars. Enthusiasm is the sparkle in your eyes, the swing in your gait. The grip of your hand, the irresistible surge o ...

Enthusiasm moves the world.

I heard as it were the voice of a great multitude, and as the voice of many waters, and as the voice of mighty thunderings.

I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot.

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

It is unfortunate, considering that enthusiasm moves the world, that so few enthusiasts can be trusted to speak the truth.

None are so old as those who have outlived enthusiasm.