Prosperity is no just scale; adversity is the only balance to weigh friends.
Reason speaks and feeling bites
Learn to be pleased with everything...because it could always be worse, but isn't!
Neither blame or praise yourself.
So also it is good not always to make a friend of the person who is expert in twining himself around us; but, after testing them, to attach ourselves to those who are worthy of our affection and likely to be serviceable to us.
Barba non facit philosophum