把道德的“应当”从认识中提炼出来 ,表明人类对伦理关系和道德生活的自觉。对“应当”的认识 ,就是对事物发展的必然性和解决矛盾的必要性的反映。道德的“应当”是真与善的统一 ,主观与客观的统一 ,自律与他律的统一 ,它的客观基础是社会历史发展的规律及其对人的应然性要求。人类生活的方方面面 ,时时刻刻都离不开“应当”的思考和选择。人们作出道德“应当”的选择 ,不仅要靠个人的觉悟和智慧 ,而且也要靠社会或集体的正确、细致、有效的思想教育工作 The moral “should” be extracted from the understanding, indicating that human beings ethical relations and moral self-consciousness. The understanding of “should” is a reflection of the inevitability of the development of things and the necessity of resolving conflicts. Moral “should” is the unity of true and good, the unification of subjective and objective, the unification of self-discipline and other disciplines. Its objective foundation is the law of social history development and its requirement for human being. All aspects of human life are inseparable from the “should” thinking and choice. People should make the moral “should” choice, not only by their personal awareness and wisdom, but also by the correct and meticulous and effective ideological and social education of the society or the collective