A day without sunshine is like night.

A disagreeable task is its own reward.

A donkey is a horse designed by a study team.

A fail-safe circuit will destroy others.

A flying particle will seek the nearest eye.

A fool and his money are soon elected.

A fool and his money stabilize the economy.

A free agent is anything but.

A friend in need is a pest indeed.

A geophysicist is not drunk as long as he can hang onto a single blade of grass and not fall off the face of the earth.