This question came up many years ago, and one answer was put to music in 1939:
I could while away the hours, conferrin’ with the flowers
Consultin’ with the rain.
And my head I’d be scratchin’ while
my thoughts were busy hatchin’
If I only had a brain.
I’d unravel every riddle for any individ’le,
In trouble or in pain.
With the thoughts you’ll be thinkin’
you could be another Lincoln
If you only had a brain.
Oh, I could tell you why The ocean’s near the shore.
I could think of things I never thunk before.
And then I’d sit, and think some more.
I would not be just a nothin’ my head all full of stuffin’
My heart all full of pain.
I would dance and be merry, life would be a ding-a-derry,
If I only had a brain.
It seemed a lot more profound when I was a child.