A state of negative energy means that you are essentially getting something for nothing.

I think everyone should have a personal mission to leave the Earth a better place for them having lived in it and let Earth then take it from there.

I am proud to be part of a species where a subset of its members willingly put their lives at risk to push the boundaries of our existence.

Knowing how to think empowers you far beyond those who know only what to think.

Any astrophysicist does not feel small looking up at the universe; we feel large.

As a child, I was aware that, at night, infrared vision would reveal monsters hiding in the bedroom closet only if they were warm-blooded. But everybody knows that your average bedroom monster is reptilian and cold-blooded.

Don't know if it's good or bad that a Google search on “Big Bang Theory” lists the sitcom before the origin of the Universe