Other

I THINK THAT THE AIM OF THE PERFECT COURTIER is so to win for himself the favor and mind of the prince whom he serves that he may be able to tell him, and always will tell him, the truth about everything he needs to know, without fear or risk of displeasing him; and that when he sees the mind of his prince inclined to a wrong action, he may dare to oppose him and in a gentle manner avail himself of the favor acquired by his good accomplishments, so as to dissuade him of every evil intent and bring him to the path of virtue.

The Book of the Courtier, 1516
Baldesar Castiglione
Contemporary of Niccolò Machiavelli