The role of passion and more generally irrational elements in processing knowledge are discussed. This seems to be a paradox, as science by definition is beyond passion. At the same time science is the expression of a culture. This paradox is examined through the experience and work of crucial figures in physics such as Newton and Einstein. Science is a dialogue between man and nature: part of the search for the transcendental which is common to many cultural activities: art, music, (...) literature. Our time is one of expectation, anxiety, and bifurcation. Far from there being an ?end? of science, our period will see the birth of a new vision, a new science whose cornerstone encloses the arrow of time: a science that makes us and our creativity the expression of a fundamental trend in the universe. (shrink)

"En cette fin de siècle, la question de l'avenir de la science est souvent posée. Je crois que nous sommes seulement au début de l'aventure. Nous assistons à l'émergence d'une science qui n'est plus limitée à des situations simplifiées, idéalisées, mais nous met en face de la complexité du monde réel, une science qui permet à la créativité humaine de se vivre comme l'expression singulière d'un trait fondamental de tous les niveaux de la nature. J'ai tenté de présenter cette transformation (...) conceptuelle qui implique l'ouverture d'un nouveau chapitre dans l'histoire féconde des relations entre physique et mathématique sous une forme lisible et accessible à tout lecteur intéressé par l'évolution de nos idées sur la nature. Nous ne sommes qu'au début de ce nouveau chapitre de l'histoire de notre dialogue avec la nature". (shrink)

The Norbert Wiener Memorial Gold Medal address delivered by the Nobel Laureate recipient. Considers Norbert Wiener and the idea of contingence. Refers to Wiener's book The Human Use of Human Beings and in particular to the preface entitled "The idea of a contingent universe" and to the epilogue of the book by Rosenblith. This raises the question faced by Wiener: how to reconcile a deterministic world à la Newton with the intrinsically probabilistic universe of Gibbs, the relativistic universe of Einstein (...) and the Heisenberg uncertainty principle? Notes the parallelism among the questions Wiener is asking with the ones to which the Gold Medallist has devoted most of his scientific life. Presents a different point of view, as a tribute to the visionary ideas developed by Wiener. Discusses the "new physics" and the problems facing physics today, at the end of the twentieth century. (shrink)