The key to his success, and to mine, at least in the field of IT, has been the ability to logically connect the dots, to let your imagination see a solution when others say there is none, and to always know that you never fail until you stop trying.
Some of his other sage advice: "Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either."
Also: “There is nothing known as "Perfect". Its only those imperfections which we choose not to see”
For hundreds of his great comments on many topics go to this link!