“You must admit I have a right to live in a pigsty if I want.”

“I don’t want you to explain. I want you to convince me I’m wrong. Or admit I’m right.”

“I admit I must have been impossible to live with. It was the self-righteousness of the grieving--my idea that I would betray him if I carried on as before, if I went through the motions of living--that must have driven my family apart from me. I still do not understand those instincts that lead you to flee the ones who want to help you, that lead you to take revenge upon them for a sorrow that is not their fault.”

“I must admit, Peter, I have difficulty in understanding why an innocent man would want to spend twelve years as a rat.”

“The Doctor gave a modest shrug. "Well, I must admit that I made heads turn wherever I go. It's a burden that I just have to live with.”

“People want to be happy, isn't that right? Haven't you heard it all your life? I want to be happy, people say. Well, aren't they? Don't we keep them moving, don't we give them fun? That's all we live for, isn't it? For pleasure, for titillation? And you must admit our culture provides plenty of these.”