Quote from Dick in The Thing That Wouldn't Die: Part Two
Mary: I can't! I can't do this! Dick: Mary, where are you going? Mary: Oh, I'm so sorry! Dick: W-What is it? Mary: Oh, I can't. I'm afraid. I'm leaving my- my planet, my- my friends, my body, everything! Dick: But we'll have each other. Mary: Oh, but it won't be the same. Dick: We'll be together. Mary: No, I- I can't! I- Dick: You're right. You belong here, Mary. We fell in love because you were a human on Earth, and so was I.