It is safer to be silent than to reveal one's secret to any one, and telling him not to mention it.
Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become and enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.
Tell no one the secret that you want to keep, although he may be worthy of confidence; for no one will be so careful of your secret as yourself.
None can be so true to your secret as yourself.
Expose not the secret failings of mankind, otherwise you must verily bring scandal upon them and distrust upon yourself.
Publish not men's secret faults, for by disgracing them you make yourself of no repute.
God preserve us! If men knew what is done in secret, no one would be free from the interference of others.