Edge of Eternity (The Century Trilogy, #3)

by Ken Follett

A man hates the person he has wronged, paradoxically. I think it’s because the victim is a perpetual reminder that he behaved shamefully.”

“A person who breaks a promise diminishes herself. It’s like losing a finger. It’s worse than being paralyzed, which is merely physical. Someone whose promises are worthless has a disabled soul.”