I should not talk so much about myself if there were anybody else whom I knew as well. There is no poison on Earth more potent, nor half so deadly, as a partial truth mixed with passion. When in doubt, punch 'em.
Success is simply a matter of luck.
Ask any failure. Delay is the deadliest form of denial. Success is not the result of spontaneous combustion. You must set yourself on fire. The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.