We can never prove that we're alone in the universe. But the Allen Telescope Array could prove that we're not.

If you took all the sand from all the beaches, all the desserts, and all the oceans and called that the Universe, our whole solar system would be less than one grain of sand.

If this is the only planet on which not only life, but intelligent life, has arisen, that would be very unusual.

Our brains are wired to interpret shapes as faces and bodies. That's why people see the Virgin Mary in the clouds or even in cheese sandwiches. It's your cytoplasm, not some strange ectoplasm.

The search for extra-terrestrial life is a failure until that moment when it suddenly becomes a success.

Despite the impression you may have from watching too much TV, movies are not about reproducing reality. Theyre about telling stories.

No heating system can deliver perfectly uniform temperatures throughout a house, and drafts can magnify the perceived difference in temperatures. Try walking around with a thermometer.

If you still believe that aliens would travel hundreds of light years to carve temporary graffiti in our wheat, then your imagination is one of the seven wonders of the world, and should be bronzed.

It bears mentioning that the Milky Way is only one of 150 billion galaxies visible to our telescopes - and each of these will have its own complement of planets.

Everything you see is filtered through your visual system (imperfect) and your brain (also imperfect, despite what your mom told you). Witness testimony is the worst kind of evidence in science.

Typically, only about 2 percent of the American populace tunes in to PBS's 'Nova' series - the most successful science show on the tube. 'Survivor' and 'X Factor' get twice the ratings.

Receive with simplicity everything that happens to you.

Change your perspective and you can change your life.

Romance her, enhance her, desire her, put her first.

To be able to possess a machine in such a way is the ultimate show of determination and awareness. It makes one realize that the physicality of our world is a boundary to us only if our will is weak

Do your beliefs create your goals or are your beliefs a result of achieving your goals?

If you're going to school, you should do what you enjoy.

Much of the DOE green energy lending program is a scam. It is a slush fund of pork for paying back campaign contributors.

Though I have never thought of myself as a book collector, there are shelves in our house browsed so often, on so many rainy winter nights, that the contents have seeped into me as if by osmosis.

Once someone's hurt you, it's harder to relax around them, harder to think of them as safe to love. But it doesn't stop you from wanting them.

I am a patient listener, but opinionated to the point of stubbornness when my mind is made up.