translate English to French: One thing however is certain: the currents of thought which claim to be postmodern merit appropriate attention. According to some of them, the time of certainties is irrevocably past, and the human being must now learn to live in a horizon of total absence of meaning, where everything is provisional and ephemeral.
D'autre part, l'affirmation du principe d'immanence, qui est centrale pour la prétention rationaliste, a suscité, à partir du siècle dernier, des réactions qui ont porté à une remise en cause radicale de postulats considérés comme indiscutables.