Being a good samaritan evokes a feeling of empathy for all and fosters brotherhood.how does it being dutiful citizen

It helps to be a dutiful citizen because it shows that your willing to go the extra mile for someone in need. It also shows that your not doing things for your benefit; it emphasizes your selflessness. This in turn will make you stand out from the crowd making you a friendlier person.

By not providing a great deal of detail about the "cylinder" in his radio production of War of the Worlds Welles helped to keep the origin of the alien invaders a mystery.  Welles probably chose to do such in order to keep the audience in suspense and to help convince them that the invasion is actually happening.