“The world is like a ride in an amusement park. And when you choose to go on it you think it's real because that's how powerful our minds are. And the ride goes up and down and round and round. It has thrills and chills and it's very brightly coloured and it's very loud and it's fun, for a while. Some people have been on the ride for a long time and they begin to question: "Is this real, or is this just a ride?" And other people have remembered, and they come back to us, they say, "Hey, don't worry, don't be afraid, ever, because this is just a ride." And we kill those people.”

“He's like fire and ice and rage. He's like the night, and the storm in the heart of the sun. He's ancient and forever. He burns at the center of time and he can see the turn of the universe. And... he's wonderful."

"Hey. Do you mind if I tell you a story? One you might not have heard. All the elements in your body were forged many many millions of years ago in the heart of a faraway star that exploded and died. That explosion scattered those elements across the desolations of deep space. After so, so many millions of years, these elements came together to form new stars and new planets. And on and on it went. The elements came together and burst apart, forming shoes and ships and sealing wax and cabbages and kings. Until, eventually, they came together to make you. You are unique in the universe.."

"The Doctor: Okay then. That's what I'll do. I'll tell you a story. Can you hear them? All these people who lived in terror of you and your judgment. All these people whose ancestors devoted themselves, sacrificed themselves to you. Can you hear them singing? Oh you like to think you're a god. But you're not a god. You're just a parasite. Eat now with jealousy and envy and longing for the lives of others. You feed on them. On the memory of love and loss and birth and death and joy and sorrow, so... so come on then. Take mine. Take my memories. But I hope you're got a big a big appetite. Because I've lived a long life. And I've seen a few things. I walked away from the last great Time War. I marked the passing of the Time Lords. I saw the birth of the universe and watched as time ran out, moment by moment, until nothing remained. No time, no space. Just me! I walked in universes where the laws of physics were devised by the mind of a madman! And I watched universes freeze and creation burn! I have seen things you wouldn't believe! I have lost things you will never understand! And I know things, secrets that must never be told, knowledge that must never be spoken! Knowledge that will make parasite gods blaze! So come on then! Take it! Take it all, baby! Have it! You have it all!"

“What a piece of work is a man!
How noble in reason! How infinite in faculties!
In form and moving, how express and admirable!
In action how like an angel!
In apprehension how like a god!
The beauty of the world!
The paragon of animals!"

"To see the world in a grain of sand,
and heaven in a wildflower,
hold infinity in the palm of your hand,
and eternity in an hour."