"The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light." --Jesus
"Sometimes the first duty of intelligent men is the restatement of the obvious" --George Orwell
"The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function." --F. Scott Fitzgerald
During the last 2 billion years the Earth's climate has alternated between a frigid "Ice House", like today's world, and a steaming "Hot House", like the world of the dinosaurs.
This chart shows how global climate has changed through time.
clipped from www.scotese.com