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from plusultra site

'Western esotericism' is not a natural term but an artificial category, applied retrospectively to a range of currents and ideas that were known by other names at least prior to the end of the eighteenth century. [This] means that, originally, not all those currents and ideas were necessarily seen as belonging together:… it is only as recently as the later seventeenth century that we find the first attempts at presenting them as one single, coherent field or domain, and at explaining what they have in common. In short, 'Western esotericism' is a modern scholarly construct, not an autonomous tradition that already existed out there and merely needed to be discovered by historians.

— The scholar of esotericism Wouter Hanegraaff, 2013.