"Friendship is always a sweet responsibility, never an opportunity. "
~ Kahlil Gibran
"In the sweetness of friendship let there be laughter, and sharing of pleasures."
~ Kahlil Gibran
"Friendship is a disinterested commerce between equals; love, an abject intercourse between tyrants and slaves. "
~ Oliver Goldsmith
"True friendship is like sound health; the value of it is seldom known until it be lost."
~ Charles Caleb Colton