Just because something doesn't do what you planned it to do doesn't mean it's useless.
Thomas A. Edison
Scripture does not forbid anything which God has given us for our use; but it condemns immoderation and thoughtless behavior. For instance, it does not forbid us to eat, or to begat children, or to possess material things and to administer them properly. But it does forbid us to be gluttonous, to fornicate and so on. It does not forbid us to think of these things - they were made to be thought of - but it forbids us to think of them with passion.
-- St. Maximos the Confessor, v2, p.108
You can always tell a real friend: when you've made a fool of yourself he doesn't feel you've done a permanent job.
Laurence J. Peter
A friend may well be reckoned the masterpiece of nature.
The only way to have a friend is to be one.
It is one of the blessings of old friends that you can afford to be stupid with them.
Ralph Waldo Emerson
True friendship ought never to conceal what it thinks.
The friendship that can cease has never been real.
A friend is long sought, hardly found, and with difficulty kept.
St Jerome