Purism, referring to the arts, was a movement that took place between 1918 and 1925 that influenced French painting and architecture. Purism was led by Amédée Ozenfant and Charles Edouard Jeanneret (Le Corbusier). Ozenfant and Le Corbusier formulated an aesthetic doctrine born from a criticism of Cubism and called it Purism: where objects are represented as elementary forms devoid of detail. The main concepts were presented in their short essay Après le Cubisme (After Cubism) published in 1918.

Source: Wikipedia

A purity of interest is evanescent...Purism cannot accept the evanescence of purity; it imposes stereotyped surrogates for pure interest. Purism aims to to put purity at the disposal of the will, whereas purity of interest is something which needs to be cared for and carefully treated... So the desire for purity of interest turns into purism if sustained in conservatism. (Max Deutscher, Subjecting and Objecting).
(J) Problems under consideration