Even through your hardest days, remember we are all made of stardust.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

I wanted to bathe myself in that burn, to let the radiation take my skin and flesh and bones until I was nothing but charged particles dancing in space.

Activism has been very productive in our society.

I'm a firm believer in research, but I'm also a firm believer in utilizing the instincts that are within your soul or in your body or in your stomach, wherever they reside.

I'm a Nietzschean about human nature. The bulk of humanity is exhausted and superfluous, miscreant, confused, latently criminal, opportunistic. I rely on that. That's leverage, man.

My generation is under-entertained.

There is only one true thing: instantly paint what you see. When you've got it, you've got it. When you haven't, you begin again. All the rest is humbug.

In war nothing is impossible, provided you use audacity.

[I]f you want instant, reflexive support for the US government's police and military powers, MSNBC is the place to turn these days.

The vortex theory [of the atom] is only a dream. Itself unproven, it can prove nothing, and any speculations founded upon it are mere dreams about dreams.

We would root out terrorism if the BSP comes to the centre