THIS ARTICLE' PUTS FORWARD SOME GENERAL reflections on the Single European Act, on the conditions in which it was negotiated and on its first consequences. But a detailed description of the modalities of the Single Act, of the entire range of changes which it will introduce and of its potential would be beyond its scope. The Single Act has been extremely controversial, during its negotiation, after its conclusion, and for different reasons, during the ratification process. Some decried it as inadequate, even derisory, but others saw in it a threat to national sovereignty. Two referendums (in Denmark and in Ireland) were needed before it could be ratified. Today, on the contrary, the Single Act and its best-known feature — the achievement of the internal market in the Community by the end of 1992 — are presented in the media as the basis of a new Europe, the foundation of all European policy. The Single European Act does not deserve so much honour, any more than it deserved the past indignity, but it contains important innovations, which might lead to significant changes in the behaviour of the institutions and in the way in which the Community itself will develop. This is what I shall try to put forward by recalling briefly first the background of the Single Act, describing the details of the negotiations and, lastly, by singling out some of the original features of the new Treaty.