Many things the fox knows, but the hedgehog one big thing

Explanation

Archilochus mentions this in an epode. Homer too writes the line. Ion the tragic poet says: "But I praise on dry land the lion's ways, and even more the hedgehog's bitter craft, who, when he gets the scent of other beasts, twisting his body in a ball about his quills, lies untouchable, defying touch and bite." It is said of the most cunning.