Which work by Lenin contains the statement: "We are not civilized enough for socialism"?

I think it was a comment to his own work not in his work itse"lf.

His program was called the New Economic Policy, and it incorporated certain aspects of Capitalism to provide a boost to the Soviet economy. Lenin, describing why he was doing this, said "We are not civilized enough for socialism". By that he meant that the Soviet Union had not acquired a strong enough Capitalist base before trying to adopt Communism. Lenin felt that if the Soviet Union could somehow build up a strong Capitalist economy - under the watchful eyes of a Proletariat Dictatorship - that it could more speedily arrive at a point where it could then transform itself into true Communism. This was sort of trying to fit a square peg into a round hole by trying to take backwards Russian society and pushing it to fit into a Marxist/Communist model. It didn't work of course. And neither has any other attempt at Communism worked, because (as we've both pointed out), every country that has tried to make Communism work has each been an undeveloped country in which Capitalism has not had a chance to take full effect.