Jean-François Thiriart was born in Bruxelles on March 22 1922 in a liberal-oriented family which had come from Lieges. During his youth he was a member of the Jeune Garde Socialiste Unifiée and in the Socialiste Anti-Fasciste Union. During a not short period he cooperated with professor Kessamier, president of the philosophical society Fichte Bund, originated from the national-bolshevist movement; then, with some other far-left elements supporting the alliance between Belgium and the national-socialist Reich, he became a member of the association Amis du Grand Reich Allemand. Because of this reason, he was condemned to death by the Belgian dealers of the Anglo-American forces in 1943: the English radio putted his name in the proscription list that was communicated to the résistance with all the instructions.