"Paul Sérusier explained to his friends [Oct. 1888 - to Bonnard, Denis, Vuillard] that, according to Paul Gauguin: the impression of nature must be wedded to the aesthetic sentiment which chooses, arranges, simplifies and synthesizes. The painter ought not to rest until he has given birth to the child of his imagination.. ..begotten in a union of his mind with reality. Gauguin insisted on a logical construction of composition, on a harmonious apportionment of light and dark colors, the simplification of forms and proportions, so as to endow the outline's of forms with a powerful and eloquent expression.. ..He also insisted upon luminous and pure colors."