The cosmogony of Fourier is the most fantastic part of a fantastic system. But as he did not consider his views in this department an essential part of his system, we need not dwell upon them. He believed that the world is to exist for eighty thousand years, forty thousand years of progress being followed by forty thousand years of decline. As yet it has not reached the adult stage, having lasted only seven thousand years. The present stage of the world is civilisation, which Fourier uses as a comprehensive term for everything artificial and corrupt, the result of perverted human institutions, themselves due to the fact that we have for five thousand years misunderstood the intentions of the Creator. The head and front of this misunderstanding consists in our pronouncing passions to be bad that are simply natural; and there is but one way of redressing it—to give a free and healthy and complete development to our passions. This leads us to the psychology of Fourier. He recognised twelve radical passions connected with three points of attraction. Five are sensitive (tending to enjoyment)—sight, hearing, taste, smell, and touch. Four are affective (tending to groups)—love, friendship, ambition, and _familism_ or paternity. The meaning and function of these are obvious enough. The remaining three, the _alternating_, _emulative_, and _composite_ (which he calls _passions rectrices_, and which tend to series or to unity), are more special to Fourier. Of the three the first is connected with the need of variety; the second leads to intrigue and jealousy; the third, full of intoxication and abandonment, is born of the combination of several pleasures of the senses and of the soul enjoyed simultaneously. The passions of the first two classes are so far controlled by the _passions rectrices_, and especially by the composite passion; but even the _passions rectrices_ obviously contain elements of discord and war. All, however, are ultimately harmonised by a great social passion, which Fourier calls _Unitéisme_. Out of the free play of all the passions harmony is evolved, like white out of the combination of the colours.