Galvani was mistaken about the amount of electricity in frogs, but he had some good ideas, too, for the galvanometer is named in his honor, and you don't have galvanometers named after you merely for making a mistake about a frog.

Frogs will eat red-flannel worms fed to them by biologists; this proves a great deal about both parties concerned.

The stork is voiceless because there is really nothing to say.

The moral of the story of the Pilgrims is that if you work hard all your life and behave yourself every minute and take no time out for fun you will break practically even, if you can borrow enough money to pay your taxes.

Alexander III of Macedon is known as Alexander the Great because he killed more people of more different kinds than any other man of his time.

Young normal tigers do not eat people. If eaten by a tiger you may rest assured he was abnormal.

The sloth lives his life upside down. He is perfectly comfortable that way. If the blood rushes to his head, nothing happens because there is nothing to work on.