"If you go back a few hundred years, what we take for granted today would seem like magic—being able to talk to people over long distances, to transmit images, flying, accessing vast amounts of informa…"

"Some people use their hair to express themselves. I use Twitter."

"I always invest my own money in the companies I create. I don't believe in using other people's money."

"I tend to be a little bit of an optimist, but I also tend to be a little bit of a realist."

"I'm trying to do things that are important and that will make a difference in the world."