The "roman du terroir" style of novel continued its popularity during the era sometimes called "La grande noirceur" (the great darkness), during the premiership of Maurice Duplessis, a time of extreme social and political conservatism in the province. Other types of novels developed during the 1940s and 1950s, such as the "roman de moeurs urbaines" (novel of urban mores), as exemplified by the writing of Gabrielle Roy, Ringuet, and Roger Lemelin. Another development in the novel was the "roman psychologique" (psychological novel), showing the inner turmoil of a character who cannot live "within the colonized society that values religion, family, and a mythic past". In the meantime, English-language writers from Quebec became prominent in Canada. Writers of this period include Claude-Henri Grignon, Félix-Antoine Savard, Ringuet, Anne Hébert, Saint-Denys Garneau, Alain Grandbois, Rina Lasnier, Clément Marchand, Roger Lemelin, Gabrielle Roy, Yves Thériault, Félix Leclerc, Isabelle Legris, Claire Martin, Francis Reginald Scott, Jean-Charles Harvey, A.M. Klein, Irving Layton, Léo-Paul Desrosiers, André Langevin, Gérard Bessette, Gratien Gélinas, Marcel Dubé, Paul-Émile Borduas, Robert Élie, Robert Charbonneau, André Giroux, Claude Gauvreau, Rex Desmarchais, Gilles Hénault, and Jean Le Moyne. Among the well-known literary works produced in Quebec at this time were two cultural and political manifestos, Prisme d'yeux (1948) and Refus global (1948), early indications of the beginning of the Quiet Revolution in Quebec.