The sun is the source of all the earth's energy. This is important because one day we're going to get the bill.

Geologists claim that although the world is running out of oil, there is still a 200-hundred-year supply of brake fluid.

Since global warming the Eskimos have seventeen different words for water.

I confess that when I first read that smog is particularly hazardous to children, senior citizens, and physically active people, for a brief moment I thought, I'm in the clear for at least ten years.

In things pertaining to enthusiasm no man is sane who does not know how to be insane on proper occasion.

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

Enthusiasm is the mother of effort, and without it nothing great was ever accomplished.

Every great and commanding moment in the annals of the world is the triumph of some enthusiasm.

Enthusiasm is the fever of reason.

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.