“There is a philosophy that says that if something is unobservable -- unobservable in principle -- it is not part of science. If there is no way to falsify or confirm a hypothesis, it belongs to the...”

“At some point we have to give up and say that's just the way it is. Or, not give up and push on.”

“Why is there space rather than no space? Why is space three-dimensional? Why is space big? We have a lot of room to move around in. How come it's not tiny? We have no consensus about these things. ...”

“Unforeseen surprises are the rule in science, not the exception. Remember: Stuff happens.”

“Life is fragile: it thrives only in a narrow range of temperatures between freezing and boiling. How lucky that our planet is just the right distance from the sun: a little farther, and the death o...”

“I'm not going to argue with people about the existence of God. I have not the vaguest idea of whether the universe was created by an intelligence.”

“You don't know me. You know one me, just like I know one you. And you can't know every me, and I can't know every you.”

“When I knew people, I knew me and when I knew me, I knew people.”

“Our spirit knows our purpose, let these en-grained impressions shape our perceptions of who we think we are today.”

“Blood is one of the things that made fights cool. Like, you knew it had gotten serious. I understand why we don't do it anymore.”

“If it doesn't matter who wins or loses, then why do they keep score?”

“Why is it that I notice so many brilliant scientists using Macs for their personal computers why does the Lawrence Livermore & Berkeley Labs buy millions of dollars worth of Macs? ”

“The more clearly you understand yourself and your emotions, the more you become a lover of what is.”

“There are only two ways to live your life: as though nothing is a miracle, or as though everything is a miracle.”

“The moral of the tale is, don't live for the approval of others. The real you is here to find out the secret of life, not to satisfy someone else's opinion.”