Buster Bear in "Grandfather Frog's Common-sense"

"Of course not! What a silly idea! You're getting foolish in your old age," retorted Little Joe.
"Can you tell me the difference between the fish that you haven't caught and the foolish green flies that I haven't caught?" asked Grandfather Frog.Little Joe couldn't find a word to say.
"You take my advice, Little Joe Otter," continued Grandfather Frog, "and always make friends with those who are bigger and stronger and smarter than you are. You'll find it pays."