[2] The journal Accent grave (revue de l'Occident) was launched in 1963 and published fewer than a dozen issues.

Its board of directors included Sérant, Pierre Andreu, Michel Déon, Roland Laudenbach and Philippe Héduy.

He published novels that reflected his personal experiences in the post-war period, and he was interested in the mystical and esoteric writings of George Gurdjieff.

In the early 1970s, he engaged in a vigorous debate with the journalist Louis Pauwels, whom he considered too optimistic, too right-wing, and too Western.

In his last work, Les enfants de Jacques Cartier, he explored the history of Americans of French ethnicity including Québécois, Acadians, French-speaking New Englanders, Franco-Indian Métis from Western Canada and Cajuns from Louisiana.

In his book La France des minorités (1965), Sérant celebrated and defended the diversity of the regional communities of Flanders, Brittany, the Basque Country, Occitania, Catalonia, Corsica, Alsace and Lorraine.

He denounced the destructive Jacobinism that would force all the provinces into the same uniform mold, seeing intolerance of internal diversity as equivalent to hatred of foreign nations and refusal to accept new ideas.

[3] Sérant believed that ethnicism, with its respect for a diversity of cultures, was the opposite of racism, which tried to exalt one community at the expense of others.