"Of course I know who you are; that's why I came to talk to you. But I didn't know if you were here from after you'd seen me regenerate. If you hadn't been, and I came up to you and said, 'Hello, Sarah Jane, I'm the Doctor,' you would have gone completely spare. So I had to let you work it out for yourself so you'd believe I'm really me."
no subject
"Of course I know who you are; that's why I came to talk to you. But I didn't know if you were here from after you'd seen me regenerate. If you hadn't been, and I came up to you and said, 'Hello, Sarah Jane, I'm the Doctor,' you would have gone completely spare. So I had to let you work it out for yourself so you'd believe I'm really me."