“Talent does what it can: Genius does what it must.”

“Genius does what it must, and talent does what it can”

“Genius is a word that is very loosely used nowadays. It is ascribed to persons to whom a more sober judgement would be satisfied to allow talent. Genius and talent are very different things. Many people have talent; it is not rare: genius is. Talent is adroit and dexterous; it can be cultivated; genius is innate, and too often strangely allied to grave defects. But what is genius?”

“Doing easily what others find difficult is talent; doing what is impossible for talent is genius.”

“What's genius? I don't know but I do know that the difference between a madman and a professional is that a pro does as well as he can within whathe has set out to do and a madman does exceptionally well at what he can't help doing.”

“If a man does not work passionately - even furiously - at being the best in the world at what he does, he fails his talent, his destiny, and his God.”