Original: After coming back to Paris in May 1941, he participated in the founding of the underground group Socialisme et Liberté with other writers Simone de Beauvoir, Merleau-Ponty, Jean-Toussaint, Dominique Desanti, Jean Kanapa, and École Normale students.
Simplified: He made friends with other writers and thinkers such as Merleau-Ponty, Jean-Toussaint and Dominique Desanti, and Jean Kanapa.