"The best thing about being a scientist is that you get to ask 'why?' all the time."

"The universe is a symphony of strings, and the mind is an instrument that can play them."

"When you look at the universe, and you have no idea what it is, then you turn to superstition."

"The universe is not just stranger than we imagine, it is stranger than we can imagine."

"I'm not a philosopher. I'm a scientist. I'm interested in what is, not what should be."