Ysabeau: I told him I could take his suffering away and make him live forever. He was so out of his mind with pain, I don't think he completely understood what he'd agreed to.
Diana: If I could use my blood to save him, I would.

Ysabeau: Matthew's true love will always be Blanca; she gave him a son. You'll never be able to bear a child by him. In 1500 years, Matthew has never mated, and I didn't think he ever will. It's forever.
Diana: I will never leave him.
Ysabeau: Of course you will. Your life is fleeting compared with a vampire's. When you are long gone, Matthew will have to carry on living without you, just as he did with Blanca.

Matthew: Honestly, though, she, she is incredibly powerful. And she's clever and funny. She's full of courage.
Hamish: Don't fall into the trap of thinking for her.

Hamish: You left her with Ysabeau? What a twisted idea of courtship.
Matthew: She loves me. Or she says she does.
Hamish: And do you love her? [pause] Oh, Christ, Matthew.
Matthew: I know. I've been fooling myself that the Congregation would no longer care. And somehow, she didn't even know about the Covenant.

Ysabeau: Could you be with my son knowing he kills? That hunting like this is the only way he can survive?
Diana: If you're trying to frighten me away from your son, you failed.

It makes me sick that she'd debase herself with a vampire. He was right. The sooner you're all wiped from the face of the earth the better.

Gillian

Do not come anywhere near me when I'm hunting. Do you understand?

Ysabeau

Marcus: Do you think this is about Diana?
Matthew: Of course it's about Diana.

Witch water. Witch wind. It's just more magic that my body can't control.

Diana

Diana: Leaving me isn't the answer. I love you. Tell me how you feel. Forget the Covenant; forget the Congregation! How do YOU feel?
Matthew: You know how I feel.
Diana: Say it!

Matthew: He's gone. They're will be no more visits from the Congregation.
Diana: How do you know that?
Matthew: Because we're not going to break the Covenant.
Diana: You're giving in?
Matthew: Dominico's visit was a diplomatic mission; the next one will not be. Even if we stood up to them what then, hm? We'd be opening up old animosities that will spiral out of control and expose us to humans. I won't let that happen.
Diana: So that's it. We're just gonna abide by some ancient, narrow-minded agreement that was made 1000 years ago.
Matthew: Yes.
Diana: No. We are bound together. My magic started coming out when I met you.
Matthew: Three weeks ago, you never even heard of me. You don't know me. You have no idea what I'm capable of. You don't even know yourself.
Diana: Stop. Stop. Why are you being like this?

Diana: What is the covenant?
Marthe: You really don't know. it forbids interspecies relationships.
Diana: That's insane. Why would anyone ever agree to that?
Marthe: There were a lot more of us creatures back then, and we'd grown accustomed to taking what we wanted. Phillipe decided that if creatures from different species mated, it might upset the balance of power. So, the Covenant was drawn up.
Diana: What happens whenever creatures break it?
Marthe: To my knowledge, it has never been broken.

A Discovery of Witches Season 1 Quotes

I'm still not comfortable around magic, especially after what happened to my parents. I still find it... I just find it difficult.

Diana

Once the world was full of wonders, but it belongs to humans now. We, creatures, have all but disappeared. Demons, vampires, and witches hiding in plain sight, fearful of discovery, ill at ease even with each other. But, as my father used to say, in every ending, there is a new beginning.

Matthew