Father Hubbard: We have a problem.
Matthew: We have several. You have your hands upon someone that doesn't belong to you.

Mary: I learned what you are from my brother as a child. I understood it to be a fable. That is how I would like to keep it.
Matthew: You would deny the truth of creatures like Diana and I. We will trouble you no further.

Matthew: There are old stories of witches with miraculous power. I lived a long time, Goody Alsop, and I've never met one.
Goody: We are rare creatures, Master Royden. We have been hunted down and forced into hiding.

Diana: I am a time spinner. I have come from the future in order to seek out a special teacher. I've seen the Book of Life with my own eyes.
Goody Alsop: The first grimoire?
Diana: Yes. I don't understand how my magic is connected to it or my purpose once I come into my power, but I do know this: My relationship to my magic, to Matthew Royden, to the Book of Life are woven together. One cannot exclude the other.
Goody Alsop: The long-awaited weaver is among us!

I'm in a city full of witches, and I still can't find a teacher.

Diana

Ysabeau: I'm tolerating them under my roof and affording them my protection. We don't need to play happy families.
Marthe: Matthew would want you to make them feel at home. If he has evolved, then so can we.

If the witches find you took blood without consent, you'll be put to death. If she gave it willingly, then she will be cast out of England. But fear not. Once you are family, I will protect you.

Father Hubbard

My father needed a spy in the English court, and I fulfilled that need, and I did it very well. Until now, apparently. Not even Phillipe de Clairmont thought to factor in time travel when he gave his orders.

Matthew

Francois: I hope I wasn't unwise to place my trust in you.
Diana: You weren't. I already knew he was Catholic. He told me.
Francois: Well, if you'd bewitched him, he would tell you anything.
Diana: Listen to my heartbeat, Francois. I will not tell a soul what I've seen up here, I promise. I suspected that he was a spy. I just, I hadn't put it together until now. He's identifying Catholics, betraying his own people, his faith.

Diana: Old St. Pauls. It's huge.
Matthew: Well, it helps not being dwarfed by skyscrapers.
Diana: I just keep thinking, now it finally feels real. But now it does. Now, it finally feels real.

Diana: I always told my students cities of the past would have smelled awful.
Matthew: Trust me, some parts do.
Diana: Not these parts.

Matthew: How am I supposed to protect you if you won't share things with me?
Diana: Alright. Where were you tonight?
Matthew: [seething] I told you. I had people I had to reach out to.
Diana: So it's OK for me to worry about you out there alone, but when I set foot outside-
Matthew: That's different, and you know it!
Diana: Is it? You don't protect me, Matthew. We protect each other. Book or no book, neither of us are getting home unless I find the right teacher. This woman, she is a gift. We should be grabbing it with both hands, not running scared.
Matthew: I've never run scared from anything in my life. I simply won't take risks where your safety is concerned.
Diana: Well, I'm not staying locked up in here. So either you find me that witch, or I will go out there and find her myself.

A Discovery of Witches Quotes

Gerbert: What is it? What can you see? Is Diana the witch from the prophecy?
Luisa: Beware the witch with the blood of the lion and the wolf for with it she shall destroy the children of the night.
Gerbert: I know that; I know. Speak to me or you will get no more of this.
Luisa: Two. Light. Dark.
Gerbert: There are two witches?
Luisa: One close.
Gerbert: Who is she, and where can I find her?

Ysabeau: You think that lighting a fire and pouring some wine will help them?
Marthe: He loves her, Ysabeau.
Ysabeau: They'll need more than love. The witches will think she turned her back on her own kind, and they will come. And when they come, her weakness will put us all at risk.
Marthe: She will find a way to use her magic to protect herself.
Ysabeau: Then she better stop behaving like some human and find a way, fast.