Riccardo Martinelli

Many nineteenth-century psychologists assume that the measurement of psychic intensity is a prerequisite to the development of a truly scientific psychology. In the first edition of the Psychology from an empirical point of view, Brentano deals with this question. He assumes that all psychic phenomena admit of a certain intensity. Later on, Brentano retreats this doctrine and claims that only sensible phenomena admit of an intensity, whereas intellectual presentations do not. As a consequence, Brentano introduces a radical gap between sensible and noetic consciousness. By contrast, Stumpf maintains a continuity between sensations and presentations. The main difference between them is the degree of their intensity. The essay provides a discussion and a comparison of the above mentioned points of view.

The purpose of this book is to highlight Carl Stumpf's contributions to philosophy and to assess some of the aspects of his work. This book brings together several specialists of Stumpf and the school of Franz Brentano, and includes fourteen original studies (in English and German) on the various aspects of Stumpf's philosophy, and some of his unpublished writings. This book is divided into four sections, and also includes a general introduction on the reception and actuality of Stumpf's philosophy. The first section examines the historical sources of his philosophy, the second examines some of the central themes of his work and the third examines his relationship to other philosophers. The fourth section consists of notes taken by Husserl during Stumpf's lectures on metaphysics in Halle, Stumpf's introduction to the edition of his correspondence with Brentano, which he prepared in 1929, and some important letters pertaining to this correspondence. This book also provides a comprehensive bibliography of Stumpf's works.

Formatosi alla lezione di Franz Brentano e di Hermann Lotze, maestro a Halle di Edmund Husserl e in seguito, a Berlino, dei fondatori della psicologia della Gestalt – Köhler, Koffka e Wertheimer – Carl Stumpf fu uno dei massimi esponenti della filosofia del suo tempo. Filosofo dai vasti interessi, ma anche psicologo di rango, attento studioso di filosofia della musica e pioniere dell’etnomusicologia, Stumpf è una figura indubbiamente originale, il cui lungo itinerario intellettuale appare sempre più imprescindibile per comprendere l’evoluzione del pensiero filosofico della seconda metà dell’Ottocento e del primo Novecento in Germania. Estraneo ai dogmi del positivismo allora imperante, ma anche alla fascinazione trascendentale della fenomenologia husserliana, Stumpf concepisce la riflessione filosofica come esercizio critico aperto all’esperienza e tuttavia capace di trascenderla per mirare alle vette della speculazione metafisica ed etica. Gli scritti qui tradotti consentono, con l'aiuto dell'apparato critico, di dare corpo all’idea di una rinascita della filosofia, che riecheggia il titolo di una conferenza berlinese di Stumpf del 1907, ma che ben si attaglia al suo progetto filosofico complessivo.