If all the Munafiqs were to go out of Basrah, the city would remain vacant.On the other hand, his description of a Believer is excellent; may we all aspire to be Believers as Hasan described them. Ameen.
The Believer is a man who is the best of all men in regard to work, the most fearful of all men. He is a man of such a nature that the more he does good works, pious deeds, and acts of serving God, the greater the fear he feels within himself, and feels that he will not be saved. The Munafiq is a man who says, 'There are so many people around me (i.e., who are doing the same thing). I shall be forgiven. Nothing bad will happen to me.' Thus he goes on doing evil while indulging a hope that God (will forgive him).(From Hilyah al-Awliya as quoted in Toshihiko Izutsu's book, The Concept of Belief in Islamic Theology, pp. 65-66.)