|This article does not cite any references or sources. (December 2009)|
- I see the Four-fold Man, The Humanity in deadly sleep
- And its fallen Emanation, the Spectre and its cruel Shadow.
Elsewhere in Jerusalem, Blake defines it this way: "The Spectre is the Reasoning Power in Man, and when separated from Imagination and closing itself as in steel in a Ratio of Things of Memory, It thence frames Laws and Moralities [...]." The Spectre also appears in Milton and The Four Zoas.