Happiness is understanding that friendship is more precious than mere things, more precious than getting your own way, more precious than being in situations where true principles are not at stake. – J. Donald Walters

To cement a new friendship, especially between foreigners or persons of a different social world, a spark with which both were secretly charged must fly from person to person, and cut across the accidents of place and time. – Cornelia Otis Skinner

The firmest friendship is based on an identity of likes and dislikes. – Sallust