What esotericism is

What it is

"Western esotericism" is an academic category covering a set of currents — Hermeticism, Neoplatonism, alchemy, astrology, Christian Kabbalah, Rosicrucianism, Theosophy, ritual magic and their descendants — that share a family resemblance and a common fate.

The category is recent. The material is old, but treating it as a single field worth studying dates from the second half of the twentieth century, and the discipline now has university chairs at Amsterdam, at the Sorbonne's École Pratique des Hautes Études, and at Exeter.

Three definitions compete, and each captures something.

Antoine Faivre's characteristics (1992) define esotericism by content. Four are intrinsic: correspondences — everything in the cosmos is linked by non-causal resemblance, "as above so below"; living nature — the world is animate rather than mechanical; imagination and mediations — imagination is a faculty of perception rather than fantasy, and intermediate beings and symbols connect levels of reality; and transmutation — the practitioner is changed, not merely informed. Two are secondary: the concordance of all traditions, and transmission through initiation.

Wouter Hanegraaff's account defines it by history rather than content: esotericism is rejected knowledge. It is what was left over when European culture, from the Enlightenment onward, drew the boundaries of legitimate religion and legitimate science. The material did not change; the walls moved, and it ended up outside.

Kocku von Stuckrad's approach defines it by discourse: esotericism is a claim to higher or absolute knowledge, structured by a dialectic of concealment and revelation — something hidden, available to those prepared for it.

Where it came from

The field's founding text is Frances Yates's Giordano Bruno and the Hermetic Tradition (1964), which argued that Renaissance Hermeticism was not a curiosity at the margin of the scientific revolution but a driver of it — that the magus who sought to operate on nature was the ancestor of the scientist who did.

The Yates thesis was enormously influential and is now substantially qualified. Historians generally accept that hermetic and magical concerns motivated figures including Newton and Boyle, while rejecting the strong claim that hermeticism produced modern science. That correction matters: the honest position is not that magic became science but that the two were not separate categories at the time, and separating them is something later historians did.

Hanegraaff's Esotericism and the Academy (2012) then turned the question on the historians themselves, tracing how this material came to be excluded from serious study, and arguing that the exclusion tells you more about the excluders than about the material.

How it is used

As a research field, with journals, chairs and conferences. And, increasingly, as a term of self-description among practitioners — which creates the usual difficulty of a scholarly category being adopted by its subject.

What we can and cannot say

We can say the terms are not synonyms, and the confusion between them is a persistent source of bad argument:

• Esoteric is the broad scholarly category, including material that is respectable, philosophical and historically central.
• Occult generally refers to the practical and operative end — ritual magic, divination, the attempt to produce effects — and carries the connotation of concealment.
• New Age is a specific twentieth-century movement, with its own history, that draws on esoteric material without being coextensive with it.

Calling Ficino a New Age author or Blavatsky a Renaissance philosopher would each be wrong in opposite directions.

We can say the "rejected knowledge" framing does real explanatory work. It accounts for why such different material — laboratory alchemy, Platonic philosophy, astrological medicine, Kabbalistic exegesis — ends up on one shelf. What they share is not a doctrine but a status: each was once inside the boundary of serious enquiry and was later placed outside it.

We can say the field is not apologetic. Academic esotericism studies is not the practice of esotericism, and its leading figures are generally not practitioners. It studies what people believed and why, in the manner of any historical discipline — which is also the position this site takes.

We cannot say the boundary was drawn wrongly. Much of this material was excluded because it did not work, and the exclusion of astrology from medicine was an improvement. What can be said is that the boundary was drawn by people, at a time, for reasons — and that knowing when and why is part of understanding what is on either side of it.

Further reading

• Wouter Hanegraaff, Western Esotericism: A Guide for the Perplexed (2013) — the short introduction.
• Antoine Faivre, Access to Western Esotericism (1994) — the six characteristics.
• Frances Yates, Giordano Bruno and the Hermetic Tradition (1964) — read for the argument, with the later corrections in mind.