Compliments are always best made behind closed doors
褒奖的话最好悄悄讲

On praise, the experts have got it wrong: it should almost never be given in public. It is a dangerous, corrosive substance that has a powerful and positive effect on the person it is aimed at but is better administered behind closed doors, says Lucy Kellaway.
公开表扬某人是危险的。研究表明，当一个人被公开表扬时，受表扬的人和提出表扬的人都会立刻引来围观群众的嫉妒和愤恨。