The Giver by Lois Lowry

Imagine if everything in the world was black and white. No conflict, no sadness, no emotions. Society is perfect in the Community, but too perfect for Jonas. Once a rule following, robot-like citizen, now a rebellious free man, all because of the Giver, the only person in the Community who is allowed to feel emotions. As Jonas learns more about the forgotten history of the human race, he realizes that not everything is as it seems. But everything he believes is now put to the test when his family is put in grave danger.