"There are different interpretations of perestroika in the West, including the United States. There is the view that it has been necessitated by the disastrous state of the Soviet economy and that it signifies disenchantment with socialism and a crisis for its ideals and ultimate goals. Nothing could be further from the truth than such interpretations, whatever the motives behind them. Of course, perestroika has been largely stimulated by our dissatisfaction with the way things have been going in our country in recent years. But it has to a far greater extent been prompted by an awareness that the potential of socialism had been underutilized. We realize this particularly clearly now in the days of the seventieth anniversary of our Revolution. We have a sound material foundation, a wealth of experience and a broad world outlook with which to perfect our society purposefully and continuously, seeking to gain ever greater returns — in terms of quantity and quality — from all our activities."
January 1, 1970
https://en.wikiquote.org/wiki/Mikhail_Gorbachev