The Deleuze Seminars is a collection of audio recordings, transcriptions, and English translations of, and supplemental materials from, the lectures French philosopher Gilles Deleuze gave during his career at the University of Paris 8. “Spinoza: The Velocities of Thought” was a 14-lecture seminar given from December 1980 to March 1981. In this seminar, Deleuze revisits his examination of Baruch Spinoza’s philosophy. Deleuze had previously published two books on Spinoza: Expressionism in Philosophy: Spinoza (Spinoza et le problème de l'expression, 1968), and Spinoza: Practical Philosophy (Spinoza – Philosophie pratique, 1970, 2nd ed. 1981). The majority of these lectures were given the same year as the publication of the second edition of the latter title. In the 27 January 1981 lecture, topics of discussion include: innate ideas and true ideas; modes of life and knowledge; semiology; American philosopher, logician, and scientist Charles Sanders Peirce and his theory of the sign; variability, associativity, and equivocity; Jewish philosopher André Neher and his Quality of Prophecy; negative theology; sense, finite and infinite; Aristotle and substances; Descartes; science and metaphysics; Cézanne; the world of signs and the optical world; the language of geometry; indicative signs, imperative signs and interpretative signs; and The Confessions of Rousseau. Deleuze also considers several aspects of seventeenth century Dutch painting during this lecture, including: its use of light; the thought of the infinite; the pure optical space of the seventeenth century versus the Greek tactile-optical space; and Dutch painting independent of forms. This dataset includes: three mp3 recordings of the lecture (total time, 2:05:59), an aggregate version of the audio recordings into a single mp3, and the complete French transcription of the recorded lecture in both pdf (32 pp) and plain text. Note: a) Material beginning with “A ce moment là…” on p. 29 of the transcription to the end of the lecture (p. 32) is not included in the ...