“Mawdryn stared at the Brigadier with such a look of pain and longing. For a moment the old soldier's mind went back thirty-five years to his first taste of action as a young lieutenant in Palestine, with his platoon badly shot up by terrorists, and he remembered the mangled conscript who screamed at the officer to take his rifle and kill him.”

“The bemused Brigadier shook his head. "You and that TARDIS.”

“The Brigadier had no wish to shake hands with the improbable young man in the ridiculous frock-coat.”

“I'm hard to get rid of." He smiled. All Tegan's suspicions about the boy came flooding back. "So it seems," she replied icily.”

“By the way," said Tegan, suddenly very self-conscious. "Thank you." "What?" "You were prepared to give up everything for us." The Doctor just smiled and stood up. "Oh, come on!”

“Don't interfere!" The Doctor silenced her angrily. "I cannot will my own destruction.”

“He stood beneath the white tower, and looked up at it with that mournful expression which his face always carried in repose: for one moment he thought of climbing up its cracked and broken stone, and then from its summit screaming down at the silent city as a child might scream at a chained animal.”