Heart broken-he felt a deep ache in his chest, like that of a sore muscle, and each beat of his heart pained him - Christopher Paolini

"See this pebble?"

"Yes."

"Take it." Eragon did and stared at the unremarkable lump. It was dull black, smooth, and as large as the end of his thumb. There were countless stones like it on the trail. "This is your training."

Eragon looked back at him, confused. "I don't understand."

"Of course you don't," said Brom impatiently. "That's why I'm teaching you and not the other way around. Now stop talking or we'll never get anywhere."

One could argue that all that really matters is that we learn to deal with where we are at any given moment, not where we were.

"Kira fixed Trig with a look. "Hey. What do you call a really smart newt?"
He grinned. "What?"
"Newton, of course."
"Permission to jettison both of them as punishment, Captain?" said Nielsen."