The essays assembled in this volume can therefore still shed fruitful light on how to overcome the various classical evolutionary theories, and on the conclusions to which it is permissible to arrive, with rigorous consistency, by taking them as a starting point. A scientific conception of a vast horizon is profiled here, apt to profoundly satisfy human cognitive aspirations, if, and in the science of nature and in the science of the spirit, they seek, beyond partial and temporary truths, the Truth in its eternal becoming, that Truth which, at the same time, is for man the Way to Life.