How to Win Friends and Influence People by
Dale Carnegie, 1936.
Three-fourths of the people you will ever meet are hungering and thirsting for sympathy. Give it to them, and they will love you.
The unvarnished truth is that almost all the people you meet feel themselves superior to you in some way, and a sure way to their hearts is to let them realize in some subtle way that you recognize their importance, and recognize it sincerely.
Make the other person feel important - and do it sincerely.
You can tell people they are wrong by a look or an intonation or a gesture just as eloquently as you can in words - and if you tell them they are wrong, do you make them want to agree with you? Never! For you have struck a direct blow at their intelligence, judgment, pride and self-respect. That will make them want to strike back. But it will never make them want to change their minds. You may then hurl at them all the logic of a Plato or an Immanuel Kant, but you will not alter their opinions, for you have hurt their feelings.
Asking questions not only makes an order more palatable; it often stimulates the creativity of the persons whom you ask. People are more likely to accept an order if they have had a part in the decision that caused the order to be issued.