Advice is offensive, not ...

Advice is offensive, not because it lays us open to unexpected regret, or convicts us of any fault which had escaped our notice, but because it shows us that we are known to others as well as to ourselves; and the officious monitor is persecuted with hatred, not because his accusation is false, but because he assumes that superiority which we are not willing to grant him, and has dared to detect what we desired to conceal.
Advice is offensive, not because it lays us open to unexpected regret, or convicts us of any fault which had escaped our notice, but because it shows us that we are known to others as well as to ourselves; and the officious monitor is persecuted with hatred, not because his accusation is false, but because he assumes that superiority which we are not willing to grant him, and has dared to detect what we desired to conceal.

Quotes from the same author

If a man does not make new acquaintances as he advances through life, he will soon find himself left alone. A man, sir, should keep his friendship in a constant repair.
To keep your secret is wisdom; but to expect others to keep it is folly.
Love is the wisdom of the fool and the folly of the wise.
Memory is the mother of all wisdom.
Friendship, like love, is destroyed by long absence, though it may be increased by short intermissions.