“He who does not know how to control himself, will be controlled by others.”Baltasar Gracián · Oracolul manual · 1647 · Aforismul 105
An emotion shown in public becomes the button others press.
For Gracián, self-control was the foundation of political and social prudence. Whoever reacts visibly — anger, excitement, anxiety — exposes their levers, and anyone who sees them can pull them. Manipulation works precisely on impulsiveness. A salesperson who notices you are excited about a car stops offering discounts; they know you will buy anyway.
Why it matters A practical lesson for negotiations, relationships, and any situation where someone profits from your visible reactions.