You have to believe what you say, and if you believe what you are saying, then acting is easy.
“Luck? I don't know anything about luck. I've never banked on it and I'm afraid of people who do. Luck to me is something else: Hard work - and realizing what is opportunity and what isn't.”
“I have this extraordinary curiosity about all subjects of the natural and human world and the interaction between the physical sciences and the social sciences.”