Excerpt from La Pensee Contemporaine: Les Grands Problemes En effet, M. Henri Poincare demontre que la science vit non seulement d'hypotheses, autre ment dit de suppositions plus ou moins verifiables sur les rapports phenomenaux qu'elle vise exclu sivement, les lois scientifiques n'etant que leur affirmation confirmee, mais encore de con ventions ou, plus precisement, d'artifices, de propositions admises comme vraies, bien qu'on les sache ne point meriter ce titre, uniquement pour les commodites de l'etude, voire de la pratique, et le (...) profit materiel que nous en pou vons tirer. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)