Next to faith this is the highest art–to be content with the calling in which God has placed you. I have not learned it yet.
Martin Luther
For the commandment is a lamp and the teaching a light, and the reproofs of discipline are the way of life,
Proverbs 6:23
The English Standard Version
There are only two people who can tell you the truth about yourself–an enemy who has lost his temper and a friend who loves you dearly.
Antisthenes