We like to see others, but don't like others to see through us.
Is not moderation an old refrain Ringing in our ears? from which we all refrain.
No path of flowers leads to glory.
It is twice the pleasure to deceive the deceiver.
Rely only on yourself; it is a common proverb.
One should oblige everyone to the extent of one's ability. One often needs someone smaller than oneself.