“Rabbit’s clever,” said Pooh.
“Yes,” said Piglet. “Rabbit’s clever.”
“And he has a Brain.”
“Yes,” said Piglet, “Rabbit has a Brain.”
There was a long silence.
“I suppose,” said Pooh, “that’s why he never understands anything.”

A. A. Milne (1882-1956) English poet and playwright [Alan Alexander Milne]

House at Pooh Corner, ch. 8 “Piglet Does a Very Grand Thing” (1928)
    (Source)