That’s one way of looking at it. I prefer to look at it another way—which is that if they are persistent enough, even tiny drops of water, over time, can change the rock forever. And it will never change back.

Desperation can make a person do surprising things.

She must love me, to worry about me. She must still be capable of love.

It would be nice if life worked this way, stripping the dirt from our lives and sending us back out into the world clean. But some dirt is destined to lingered.

No one's perfect," I whisper. "It doesn't work that way. One bad thing goes away, and another bad thing replaces it." I traded cowardice for cruelty; I traded weakness for ferocity.

Dauntless,' he says. 'I was born for Abnegation. I was planning on leaving Dauntless, and becoming factionless. But then I met her, and...I felt like maybe I could make something more of my decision.' Her. For a moment, it's like I'm looking at a different person, sitting in Tobias's skin, one whose life is not as simple as I thought. He wanted to leave Dauntless, but he stayed because of me. He never told me that.

It is impossible to erase my choices.