All contemporary forces of change validate this view. The proofs can be discerned in the many examples already cited of the favourable signs towards world peace in current international movements and developments. The army of men and women, drawn from virtually every culture, race and nation on earth, who serve the multifarious agencies of the United Nations, represent a planetary "civil service" whose impressive accomplishments are indicative of the degree of co-operation that can be attained even under discouraging conditions. An urge towards unity, like a spiritual springtime, struggles to express itself through countless international congresses that bring together people from a vast array of disciplines. It motivates appeals for international projects involving children and youth. Indeed, it is the real source of the remarkable movement towards ecumenism by which members of historically antagonistic religions and sects seem irresistibly drawn towards one another. Together with the opposing tendency to warfare and self-aggrandizement against which it ceaselessly struggles, the drive towards world unity is one of the dominant, pervasive features of life on the planet during the closing years of the twentieth century.