The human rights included both economic, social and cultural rights and civil and political rights because it was based on the principle that the different rights could only successfully exist in combination:The ideal of free human beings enjoying civil and political freedom and freedom from fear and want can only be achieved if conditions are created whereby everyone may enjoy his civil and political rights, as well as his social, economic and cultural rights.—International Covenant on Civil and Political Rights and the International Covenant on Economic Social and Cultural Rights, 1966This is held to be true because without civil and political rights the public cannot assert their economic, social and cultural rights. Similarly, without livelihoods and a working society, the public cannot assert or make use of civil or political rights (known as the full belly thesis).The indivisibility and interdependence of all human rights has been confirmed by the 1993 Vienna Declaration and Programme of Action:All human rights are universal, indivisible and interdependent and related. The international community must treat human rights globally in a fair and equal manner, on the same footing, and with the same emphasis.—Vienna Declaration and Programme of Action, World Conference on Human Rights, 1993This statement was again endorsed at the 2005 World Summit in New York (paragraph 121).Although accepted by the signatories to the UDHR, most do not in practice give equal weight to the different types of rights. Some Western cultures have often given priority to civil and political rights, sometimes at the expense of economic and social rights such as the right to work, to education, health and housing. Similarly the ex Soviet bloc countries and Asian countries have tended to give priority to economic, social and cultural rights, but have often failed to provide civil and political rights.