"Neither the army nor the treasury, but friends, are the true supports of the throne; for friends cannot be collected by force of arms, nor purchased with money; they are the offspring of kindness and sincerity."
"Children treat their friends differently than they treat the other people in their lives. A friendship is a place for experimenting with new ways of handling anger and aggression. It is an arena for practicing reciprocity, testing assertiveness, and searching for compromise in ways children would not try with parents or siblings."
"When we enlarge upon the affection our friends have for us, this is very often not so much out of a sense of gratitude as from a desire to persuade people of our own great worth, that can deserve so much kindness."
"It is impossible for us to love anything without some respect to ourselves; and we only consult our own inclination and our own pleasure when we prefer our friends to ourselves. And yet this preference is the only thing that can render friendship perfect and sincere."