"Eels are not produced from sexual intercourse...nor are they oviparous, nor have they ever been detected with semen or ova...They originated in what are called the entrails of the earth, which are found spontaneously in mud and moist earth."
Aristotle (Greek philosopher), Parts of Animals, 4th Century B.C.
Aristotle (Greek philosopher), Parts of Animals, 4th Century B.C.