Original article can be found at: http://www.erudit.org/revue/ravon/apropos.htmlA rhetoric of spectrality pervades Thomas Carlyle’s writings, in a way which is intimately related to his characteristic position of “natural supernaturalism.” This essay argues that Carlyle’s rhetorical emphasis on spectral hallucinations in his descriptions of social upheavals such as those of revolutionary France reflects the influence on his work of physiological theories of perception stemming from the medical thought of Erasmus Darwin, theories which are frequently invoked in early nineteenth-century theories of ghosts and apparitions. Carlyle’s preoccupation in his historical writing with the figure of the “Great Man” also reflects this medical context, i...