“He who does not know how to conceal knows not how to reign.”Publilius Syrus · Sentințe · -50 · Sentința 12
Every needless disclosure is a weapon handed to your rival.
Rule rests on an asymmetry of information. Whoever reveals intentions, fears, and limits hands rivals a map of their own weak points. A manager who announces in a meeting which competitor they might join loses their negotiating leverage that same day. Restraint is not hypocrisy but control of timing: you disclose something only when disclosure buys you something. Without that filter, every word becomes a weapon in someone else's hand.
Why it matters Useful to anyone negotiating, leading, or working in competitive settings: before speaking, ask who gains from what you are about to reveal.