To achieve this density of a neutron star at home, just cram a herd of 50 million elephants into the volume of a thimble.

Dreams about the future are always filled with gadgets.

Claiming there is no other life in the universe is like scooping up some water, looking at the cup and claiming there are no whales in the ocean.

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

Need a distraction today? Not only does 12 + 1 = 11 + 2, but the letters "twelve plus one" rearrange to give you "eleven plus two."

We are part of this universe; we are in this universe, but perhaps more important than both of those facts, is that the universe is in us.

The Universe is under no obligation to make sense to you.

Today, scientists sound the alarm on other environmental dangers. Vested interests still hire their own scientists to confuse the issue. But in the end, nature, will not be fooled.

If you're really successful at bullshitting, it means you're not hanging around enough people smarter than you.

We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically.

Santa knows Physics: Of all colors, Red Light penetrates fog best. That's why Benny the Blue-nosed reindeer never got the gig.

Lies are the religion of slaves and masters. Truth is the god of the free man.

If we were alone, he would have thrown me up against the nearest wall, and holy hell, I would have let him.

Love that brings you sorrow is better than hate that brings you joy.

There are examples of fraternal dictatorships, or one, anyway: the passing of power from Fidel to Raul Castro.

Economic activity is carried out by individuals in organisations that require a high degree of social co-operation

I have been asked whether I wish to nominate a successor, an inheritor, a dauphin or delfino. I have decided to name Christopher Hitchens.

You can only control what you can control.

Emotion is not opposed to reason. Emotions guide and manage thought in fundamental ways and complement the deficiencies of thinking.

Fifty years old, 212 fights, and I'm still pretty.

The possession of a library, or the free use of it, no more constitutes learning, than the possession of wealth constitutes generosity.