This is the new and fantastic book by Arthur M. Melzer and the subtitle is The Lost History of Esoteric Writing. It is the best book I know on esoteric writing and its history and furthermore it is clear and to the point! (I think)
Melzer starts his chapter eight with this quotation from John Toland’s eighteenth century Pantheisticon:
[Esotericism is] practiced not by the Ancients alone; for to declare the Truth, it is more in Use among the Moderns.
Here is another bit from the book:
To begin with, we need an author who, in his interpretations, is willing to follow the very un-Straussian injunction — often found on mathematics exams — “show all work.” We need to see, once or twice, how the sausage is made. The best writing for this purpose that I am familiar with comes from an appropriately un-Straussian source: Stanley Fish. His “Georgics of the Mind: The Experience of Bacon’s Essays” is a brilliant and nuanced exercise in textual analysis that openly displays, at every stage of Fish’s encounter with the text, what he thinks and why he thinks it.
…Another excellent and highly communicative reader…is Robert Connor. His Thucydides is a very sensitive reading of Thucydides’s great history, a reading openly arrived at and clearly conveyed. In conjunction with this, one should also read Clifford Orwin’s superb The Humanity of Thucydides.