Fourier was moved by the far-reaching effects of Newton's discovery to seek a law which would coordinate facts in the moral world as the principle of gravitation had co-ordinated facts in the physical world, and in 1808 he claimed to have found the secret in what he called the law of Passional Attraction. [Footnote: Theorie des quatre mouvements et des destinees generales. General accounts of his theories will be found in Charles Fourier, sa vie et sa theorie, by his disciple Dr. Ch. Pellarin (2nd ed., 1843), and in Flint, Hist. of Philosophy of History in France, etc., pp. 408 sqq.] The human passions have hitherto been sources of misery; the problem for man is to make them sources of happiness. If we know the law which governs them, we can make such changes in our environment that none of the passions will need to be curbed, and the free indulgence of one will not hinder or compromise the satisfaction of the others. His worthless law for harmonising the passions without restraining them need not detain us. The structure of society, by which he proposed to realise the benefits of his discovery, was based on co-operation, but was not socialistic. The family as a social unit was to be replaced by a larger unit (PHALANGE), economically self-sufficing, and consisting of about 1800 persons, who were to live together in a vast building (PHALANSTERE), surrounded by a domain sufficient to produce all they required. Private property is not abolished; the community will include both rich and poor; all the products of their work are distributed in shares according to the labour, talents, and capital of each member, but a fixed minimum is assured to every one. The scheme was actually tried on a small scale near the forest of Rambouillet in 1832.