None are so old as those who have outlived enthusiasm.

I know no subject more elevating, more amazing, more ready to the poetical enthusiasm, the philosophical reflection, and the moral sentiment than the works of nature. Where can we meet such variety, such beauty, such magnificence?

I wouldn't call it radical; I would call it enthusiasm for progress.

Enthusiasm for a cause sometimes warps judgment.

I noticed recently, in the last few shows I did, that I'm starting to get people - not a large group, but quite a few people - who come to see me because they love Curb Your Enthusiasm.

When you discover your mission, you will feel its demand. It will fill you with enthusiasm and a burning desire to get to work on it.

The sense of this word among the Greeks affords the noblest definition of it; enthusiasm signifies God in us.

The whole mystery of temptation is to have sins suggested to us, and to be swept after them by a sudden enthusiasm, which sometimes feels as strong as the Spirit of God ever made in us the enthusiasm for virtue.

Science is the great antidote to the poison of enthusiasm and superstition.

It is energy - the central element of which is will - that produces the miracle that is enthusiasm in all ages. Everywhere it is what is called force of character and the sustaining power of all great action.

Enthusiasm... the sustaining power of all great action.

Brazil has rediscovered itself, and this rediscovery is being expressed in its people's enthusiasm and their desire to mobilize to face the huge problems that lie ahead of us.

The Peace Corps is guilty of enthusiasm and a crusading spirit. But we're not apologetic about it.

Being accused of enthusiasm is something I'll never live down.

A man can succeed at almost anything for which he has unlimited enthusiasm.