People disappoint you

“Every person is a possibility. The hopeless romantics feel it most acutely, but even for others, the only way to keep going is to see every person as a possibility.” ― David Levithan, Every Day

“It is easy to forget how full the world is of people, full to bursting, and each of them imaginable and consistently misimagined.” ― John Green, Paper Towns

“Isn't it also that on some fundamental level we find it difficult to understand that other people are human beings in the same way that we are? We idealize them as gods or dismiss them as animals.” ― John Green, Paper Towns

“Just remember that sometimes, the way you think about a person isn’t the way they actually are… People are different when you can smell them and see them up close…” ― John Green, Paper Towns

“You have to accept that sometimes that's how things happen in this world. People's opinions, their feelings, they go one way, then the other. It just so happens you grew up at a certain point in this process.” ― Kazuo Ishiguro, Never Let Me Go