Brains are no good if you don’t use them.

One must be a fox in order to recognize traps, and a lion to frighten off wolves. Those who simply act like lions are stupid.

Digging deep in a Martian desert men discovered an enormous brain. It suddenly started to think at them — So they covered it up again...

I don’t want you to agree with me; I want you to use your misplaced acorn of a brain before the squirrel comes looking for it again.

“It’s no use!” it was the custom of his grandfather to say. “There’s not a bit o’ use in having brains! All they do is get you into trouble! A lucky idiot’s ten times better off than a brainy man with a jinx on him! A smart man starts thinkin’, and he thinks himself into a jail cell if his luck is bad, and good luck’s wasted on him because it ain’t reasonable and he don’t believe in it when it happens! It’s taken me a lifetime to keep my brains from ruinin’ me! No, sir! I hope none o’ my descendants inherit my brains! I pity ‘em if they do!”
Hoddan had been on Darth not more than four hours. In that time he’d found himself robbed, had resented it, had been the object of two spirited attempts at assassination, had ridden an excruciating number of miles on an unfamiliar animal, and now found himself in a stone dungeon and deprived of food lest feeding him obligate his host not to cut his throat. And he’d gotten into this by himself! He’d chosen it! He’d practically asked for it!
He began strongly to share his grandfather’s disillusioned view of brains.

"I don't know enough," replied the Scarecrow cheerfully. "My head is stuffed with straw, you know, and that is why I am going to Oz to ask him for some brains." "Oh, I see," said the Tin Woodman. "But, after all, brains are not the best things in the world." "Have you any?" inquired the Scarecrow. "No, my head is quite empty," answered the Woodman. "But once I had brains, and a heart also; so, having tried them both, I should much rather have a heart."

The lion cannot protect himself from traps, and the fox cannot defend himself from wolves. One must therefore be a fox to recognize traps, and a lion to frighten wolves.

"All the same," said the Scarecrow, "I shall ask for brains instead of a heart; for a fool would not know what to do with a heart if he had one."

One Must Be A Fox In Order To Recognize Traps, And A Lion To Frighten Off Wolves

Once again, Caddrick had failed to use the few brains God had given him.

Once I was playing and I started to see the mbira as the head of a lion, the keys were the teeth of the lion. There was no way to escape, so the only thing I could do was to break the teeth of the lion. It happened for a long time that I was fighting with the lion, breaking its teeth. Afterwards, people were looking at me and I was wondering what was happening when I was breaking the teeth!

"And then I should get no brains," said the Scarecrow. "And I should get no courage," said the Cowardly Lion. "And I should get no heart," said the Tin Woodman. "And I should never get back to Kansas," said Dorothy.

If a lion could speak, it would not understand itself.

He unzipped his pants and his brains fell out.