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If Socialism can only be realized when the intellectual development of all the people permits it, then we shall not see Socialism for at least five hundred years.

I recognise that Socialism has ended its purely theoretical course, and that the hour to construct has come.

Someday, the capitalist system will disappear in the United States, because no social class system has been eternal. One day, class societies will disappear.

What if capitalism is unsustainable, and socialism is impossible?

In hindsight it may even seem inevitable that a socialist society will starve when it runs out of capitalists.

While there's capitalism, there'll be socialism, because there is always a response to injustice.

Under socialism all will govern in turn and will soon become accustomed to no one governing.

Without Socialism the working class is a heterogeneous mixture of different categories, some of which have independent, varying interests, sometimes opposed to each other.

Real socialism is inside man. It wasn't born with Marx. It was in the communes of Italy in the Middle Ages. You can't say it is finished.