Smartness is not worth a dime unless you create something valuable out of it.
Else, your smartness is poised to become a part of history in weeks, months or maybe years to come. Smartness is nothing unless put into action. None would acknowledge you as a smart chap unless you have something palpable to support that proposition.
Smartness which stays in the contours is nothing.
But, put into action, its worth not just success, but can be a legacy for which people you impact may celebrate your existence for several generations to come.
Being smart is not enough. It needs work.