Engels begins by chronicaling the thought of utopian socialists, starting with Saint-Simon.

Saint-Simon is considered to be a utopian socialist.

This work was intended to draw a distinction between the utopian socialists and Marx's own scientific socialist philosophy.

The first utopian socialists even failed to address the question of how a socialist society would be achieved.

There he associated with utopian socialists.

Other writers described by Marx as "utopian socialists" included Saint-Simon.

Likewise, modern intentional communities based on socialist ideas could also be categorized as "utopian socialist".

Some communities of the modern intentional community movement could be categorized as utopian socialist.

Its political outlook was largely utopian socialist.

It's an attractive vision, but it suffers from the same failings as those of the utopian socialists.