Shaw wrote his plays with the deliberate purpose of propaganda. He himself said, "My reputation has been gained by my persistent struggle to force the public to reconsider its morals." He prepared the minds of the audience by written prefaces to his plays which are far more convincing than the plays themselves. That is why his plays were more successful when they were produced a second or third time when the audience had read them in their published forms.

كتب [برناردشو ] مسرحياته بهدف مقصود للدعايه .هو بنفسه قال : اكتسبت شهرتي من خلال كفاحي المستمر لاجبار الجمهور على اعادة الاهتمام باخلاقياتهم ..
أعد عقول الجماهير بكتابة مقدمات لمسرحياته تكون اكثر اقناعا بكثير من المسرحيه نفسها .
لهذا السبب كانت مسرحياته الاكثر نجاحاً حينما عرضت للمره الثانية والثالثة حينما قرأها الجمهور في شكلها المكتوب