Wouter J. Hanegraaff's 'Esotericism and the Academy' (2012) is a major contribution to the study of Western esotericism. It examines the historical development of the very category of - what is now termed - 'Western esotericism', thus shedding revealing light on the much discussed problem: what do we actually mean by "esotericism" in academic usage?
Hanegraaff argues that the category has its roots in the late 15th century, when the neoplatonic and hermetic movements of late antiquity (as well as Jewish kabbalah) became available for Renaissance humanists' innovative minds. In the following centuries there emerged a wide variety of religio-philosophical movements that drew inspiration from these "pagan" currents. Although these movements didn't form a single "esoteric" tradition as such, they were linked together in the scholarly imagination of theologians and - later - Enlightenment philosophers and modern academics, who were eager to reject them.
Hanegraaff claims that this polemical process of rejection is the very source of the category of 'Western esotericism'. The category has had many names throughout centuries and in different contexts, but the attitude towards its composite movements has always been negative. Protestant theologians of the 17th century talked about, for example, "platonic-hermetic christianity", which in their eyes was - of course - heretic, whereas Enlightenment thinkers and modern academics saw in these movements nothing but "irrationality" and "superstition".
While protestant scholars had paid serious effort to understand the nature of these rejected movements, in the Enlightenment and scientific discourses "the occult" - to introduce another name for the polemical category - was usually simply ignored as a manifestation of the ahistorical irrational tendencies of the human mind. This attitude resulted in an unfortunate lack of interest to pay closer academical attention to these historical movements, and thus their historical study was for a long time left for amateurs and insiders. This situation has been improved only since the 20th century, especially from the 1990's onwards, as the study of Western esotericism has been formed as an academic discipline.
For Hanegraaff this polemical construction of the category of 'Western esotericism' has interesting and wide consequences: he argues that, throughout centuries, this category of rejected knowledge has functioned as "the Other", against which scholars and academics have formed their own identity and - as a result - the identity of modern Western culture. If this is true, then the study of Western esotericism may have a deep impact for the self-understanding of the modern culture and academy. At the very least, when this rejected Other is drawn to the light of academic reflection, our history begins to look very different than what we are used to think of it.
Hanegraaff's work is a well-studied and well-written piece of academic historiography. It's a compulsory reading for anyone who wishes to keep up with the study of Western esotericism, but its scope is wide enough to interest also others than just mere specialists.