John Steinbeck said this quote

...I say to you, without pleasure, that this son of ours will be a great man, because -- well -- because he is not very intelligent. He can see only one desire at a time. I said he tested his dreams; he will murder every dream with the implacable arrows of his will. This boy will win to every goal of his aiming; for he can realize no thought, no reason, but his own. And I am sorry for his coming greatness...