“Ever since Barry's funeral, Gavin had dwelled, with a sense of deep inadequacy, on the comparatively small gap that he was sure he would leave behind in his community, should he die. Looking at Mary, he wondered whether it would not be better to leave a huge hole in one person's heart.”

“His eyes sparkled again, and in that instant I felt a strong urge to get up and leave him behind. I had been wrong to think what Sean and I had was special. He wasn’t ‘the one’. He couldn’t be. ‘The one’ would never leave me behind.”

“Thomas looked around and tried not to let his duty turn him bitter. These were good men, and he would not leave them behind. He had chosen this, an unselfish life.”

“He would never abandon her, never leave a gaping hole, and even if he died someday, he was preserved like a lab specimen from all the alcohol he imbibed, so he wouldn't look or act much different.”

“Kelly hesitated, then saluted. John turned and grabbed her arm. "Come on, Spartan. Don't look back." The truth was, it was John who didn't dare look back. If he had, he would have stayed with Sam. Better to die with a friend than leave him behind. But as much as he wanted to fight and die alongside his friend, he had to set an example for the rest of the Spartans -- and live to fight another day. John and Kelly pushed the pressure doors shut behind them. "Good-bye," he whispered.”

“It was hard to leave. But it was impossible to stay. He was leaving from choice because he was young and energetic and adventurous and had long wanted to carve a life of his own.He was going to new possibility, new dreams. But he was leaving behind places and people. And though, being young, he was sure he would see them all again some day, he knew too that many years might pass before he did so.It was not easy to leave.”