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

“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 what
he has set out to do and a madman does exceptionally well at what he can't help doing.”

“What a falsehood it is to say that genius and industry are incompatible! Does one work of genius exist that has not also been a work of labour?”

“A man does what he can; a woman does what a man cannot.”

“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.”

“In my end is my beginning — that's what people are always saying. But what does it mean? And just where does my story begin? I must try and think…”

“You can do something with talent, but nothing with genius….”

“Genius does not excuse evil.”

“Because learning does not consist only of knowing what we must or we can do, but also of knowing what we could do and perhaps should not do.”