A good friend keeps your secrets for you. A best friend helps you keep your own secrets.
Whoever wishes to keep a secret must hide the fact that he possesses one.
All registers which, it is acknowledged, ought to be kept secret, ought certainly never to exist.
The best kept secret in the investing world: Almost nothing turns out as expected.
Mr. Gorbachev has apparently stumbled onto one of the best-kept secrets in recent Soviet history: Communism doesn't work.
I'd learned that some things are best kept secret.
Northern Ireland is the world’s best kept secret, both in the character of its people and its scenery.
Despite what The Wall Street Journal says, our awards are the best-kept secret in America, with the possible exception of what George W. Bush did in the '70s.
To keep your secret is wisdom; but to expect others to keep it is folly.
Time is the best kept secret of the rich.