Abstract
A rewritten version, following the same plan and theme, of the author's earlier work of the same title. New chapters are added on Unamuno's ideas of fiction and of reality. The bibliographical appendix, with brief comments, is brought up-to-date. The unifying stress is on the "incessant fluctuation" between opposites, such as reason and the irrational, as the source of Unamuno's originality. Sympathetically expository rather than critical, this brief sketch deliberately sacrifices precision and analysis for the sake of "interiorizacion"--probably the most profitable introductory approach to such a thinker.--L. K. B.