I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

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.

It's not how good you are, it's how good you want to be.

You must dare the impossible. With divine grace, it will be possible.

Anxiety is the handmaiden of contemporary ambition.

A student who is becoming better than his master is a bright student

Every male in the world thinks he's an excellent driver. Every copper who's ever had to pick an eyeball out of a puddle knows that most of them are kidding themselves.

There's a reason you never see anyone's house with a Beware of Cat sign. Because they're not even worth mentioning.

Those who are truly brave, shall never live in fear.

The grey mare is the better horse.

Habit is everything, even in love.

The worst of guardians is a cruel ruler. Beware of becoming one of them.