Liberals generally take a positive view of human nature. They have great faith in human reason and they are convinced that rational principles can be applied to international affairs. Also believe that individuals share many interests and can thus engage in collaborative and cooperative social action,domestically as well as internationally,which results in greater benefits for everybody at home and abroad. In other words, conflict and war are not inevitable; when people employ their reason they canachieve mutually benefical cooperation not only within states but also across international boundaries.