"In fact, if the sense of civic duty derives its supreme justification from the ethical principles of the respect for the human person and for the common good, however, it thrives with vigor only in a political, administrative and economic climate which is alive and congenial. In addition to the institutions which allow him to take part in the direction of public affairs and draw the attention of his leaders to his legitimate grievances, the citizen must be able to rely on just laws, on an equitable apportionment of social duties, on a courteous and effective administration as well as on the impartiality of the courts."