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.

Whatever you do, protect those you care for. Without them, life is more miserable than you can imagine.

...even the donkeys were quiet.

I'm the sort of person that starts digging a hole and doesn't stop until it's finished.

...life is in Fate's hands now. You made your choice to stay... it's too late to change that, so stop agonizing over it.... You're making my scales itch. Saphira, from "Eragon

It is foolish to conjure up woe where none exists.

Keep in mind, Eragon, that no one thinks himself a villain, and few make decisions they think are wrong. A person may dislike his choice, but he will stand by it because, even in the worst circumstances, he believes that it was the best option available to him at the time.