The past is a source of knowledge, and the future is a source of hope.
Love of the past implies faith in the future.
Friendships are different from all other relationships.
Unlike acquaintanceship, friendship is based on love. Unlike lovers and married couples, it is free of jealousy. Unlike children and parents, it knows neither criticism nor resentment. Friendship has no status in law. Business partnerships are based on a contract. So is marriage. Parents are bound by the law. But friendships are freely entered into, freely given, freely exercised.