"The only purpose for which power can be rightfully exercised over any member of a civilized community, against his will is to prevent harm to others" - Notorious B.I.G.
Did Biggie say that?! NO. This beauty is from John Stuart Mill.
We will let your friends figure it out on their own though once they read it. If you care about them you will tell them, if you don't then your secret is safe with us.