The Descent of Ideas: The History of Intellectual History (review)

The field of intellectual history, once known as the history of ideas, intersects with many other historical sub-disciplines, especially the history of philosophy, the history of literature, the history of science, and cultural history. Donald Kelley, a distinguished intellectual historian and editor of The Journal of the History of Ideas, has written a comprehensive history of his field that emphasizes the process by which scholars who studied the history of thought gradually adopted an approach to their subject that resulted in "the descent of ideas" from philosophical abstraction to the "sublunar" realm of human experience and understanding. This intellectual descent, just like the biological descent of man plotted by Darwin in 1871, has not followed a linear course. Displaying remarkable scholarly range and erudition, Kelley guides the reader through a complex and sometimes amorphous history of intellectual history that covers developments in scholarship from ancient times to the present.

The most original and distinctive feature of the book is Kelley's emphasis on the importance of eclecticism in the emergence of intellectual history. The book begins with an exposition of the scholarship of the early nineteenth-century Liberal French philosopher and educator Victor Cousin, whose eclectic approach to teaching the history of philosophy was for him not only the best route to attaining true wisdom but also the key to organizing the history of thought. In this way Cousin helped to make intellectual history a distinct branch of historical scholarship, while his contemporaries Abel-François Villemain and François Guizot marked a parallel shift in interest from the history of ideas to the history of literature and the history of civilization. From this starting point Kelley looks back to classical, medieval, and early modern thought, exploring earlier expressions of eclecticism, including that of Diogenes Laertius in the third century CE, as a distinct and often maligned philosophical tradition. An excellent chapter on the "new" or modern eclecticism of the seventeenth and eighteenth centuries, which rejected syncretism as well as skepticism and which found a place for Christian thought, gives new significance to the work of Jakob Thomasius, his son Christian Thomasius, and J. J. Brucker, whose Critical History of Philosophy (1742-44) established the history of philosophy as a distinct discipline.

Kelley devotes considerable space to discussing the intersection between the history of philosophy and intellectual history. The former has long served as the "taproot" of the latter, even after eighteenth-century philosophers, striving to establish philosophy as a rigorous science, rejected a historical approach to attaining wisdom. This development caused a split within the ranks of philosophers between the "purists" in the Kantian tradition and "culturalists" like J. G. Herder who, "following the descent of ideas into the medium of language, strayed off into what came to be known as cultural history" (p. 4). In a chapter devoted to the history of philosophy in modern times, Kelley explores the contributions made by the philosophers Ernst Cassirer, Benedetto Croce, and Arthur Lovejoy to the field of intellectual history.

By taking a long historical perspective on the development of his field, Kelley is able to demonstrate that some recent trends in intellectual and literary history have longstanding precedents. Thus he traces the recent "linguistic turn" in historical analysis, which he styles the "linguistic return," back to the Renaissance, and he sees the claims of twentieth-century scholars who emphasize the importance of narrative structures in giving meaning to the past as restatements of ancient literary theory. In his chapter, "The Way of Ideas and the Ways of Words," Kelley shows that the descent of ideas began long before the emergence of intellectual history as a distinct field. As might be expected in a work of historiography, Kelley's methodology in establishing these precedents and continuities in scholarship is in a certain sense traditional. Yet there is little that...