In a complex universe, in a society undergoing unprecedented change, how can we find the truth if we are not willing to question everything and to give a fair hearing to everything?

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.

Campbell" Julia says "Don't do this to me""Do what?""Push me off the same cliff twice

Pick your battles, and accept yourself for who you are.

Initiative is at the heart of manhood

I know my hair is out of the '60's, my clothes are '50's and the shoes I wear are from the '40's. But I like looking like I came out of a fairy tale.

[Hillary Clinton] is also reckless. So reckless, in fact, that she put her emails on an illegal server that our enemies could easily hack and probably have.

Our partnership has been built on four pillars The first pillar is peace. The second pillar is freedom. The third pillar is respect. The fourth pillar is cooperation.

The worst mistake a woman can make is to emulate a man.

The Democratic Party likes to remind people that the Russian force around that was very strong, remarkably strong.

Real communication is impossible without listening.

What's the safest thing to be when one is met by a gang of social outcasts in an alley? ...No, another social outcast!