"An International Administrative Service", From an Address to the International Law Association at McGill University, Montreal, 30 May, 1956. Wilder Foote (Ed.), The Servant of Peace, A Selection of the Speeches and Statements of Dag Hammarskjöld, The Bodley Head, London 1962, p. 116.
Context: Do we refer to the purposes of the Charter? They are expressions of universally shared ideals which cannot fail us, though we, alas, often fail them. Or do we think of the institutions of the United Nations? They are our tools. We fashioned them. We use them. It is our responsibility to remedy any flaws there may be in them.... This is a difficult lesson for both idealists and realists, though for different reasons. I suppose that, just as the first temptation of the realist is the illusion of cynicism, so the first temptation of the idealist is the illusion of Utopia.