This oak tree and me, we're made of the same stuff.

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.

The trouble with me, he thought unhappily, is that I have been about the world long enough to know that God's plans for us, however infallibly good, may not take the form we expect and demand.

We long for things that harm us and run from the things that grow and heal us. We think good is bad and bad is good.

Drugs became an obsession, like Culture Club had been, like religion later became although I'm through with that now.

No sooner do we think we have assembled a comfortable life than we find a piece of ourselves that has no place to fit in.

Always keep a window in the attic open; not just cracked: open.

Everything will be okay in the end. If it's not okay, it's not the end.

Life is short, and it is here to be lived.

I'm just singing what I feel in my heart.

The men were wild as ourang-outans, and the women fit only to flog cattle.

Madame Kovarian: The anger of a good man is not a problem. Good men have too many rules. The Doctor: Good men don't need rules. Today is not the day to find out why I have so many.