You are learning something every day.

A baby has brains, but it doesn't know much.

Experience is the only thing that brings knowledge, and the longer you are on earth the more experience you are sure to get." "That may all be true," said the Scarecrow, "but I shall be very unhappy unless you give me brains." The false Wizard looked at him carefully.
"Well," he said with a sigh, "I'm not much of a magician, as I said; but if you will come to me tomorrow morning, I will stuff your head with brains.

I cannot tell you how to use them, however; you must find that out for yourself." "Oh, thank you--thank you!" cried the Scarecrow.

"I'll find a way to use them, never fear!" "But how about my courage ?" asked the Lion anxiously.
"You have plenty of courage, I am sure," answered Oz.