And how in that case it is necessary to act?

Matchless phrase ;)

The nice message

Should you tell, that you are not right.

Bravo, excellent phrase and is duly

Bravo, what necessary words..., an excellent idea

Certainly. So happens.

It is removed (has mixed topic)

The matchless answer ;)

It is remarkable, very valuable message

Should you tell you have misled.

It is simply remarkable answer

Bravo, what phrase..., a brilliant idea

This magnificent phrase is necessary just by the way

As it is curious.. :)