Sockburn church. The figure has a wyvern at his feet, a reference to the Sockburn Worm slain by Sir John Conyers (and a possible source for Lewis Carroll's Jabberwocky). {{efn| Old Sockburn church : " The stone effigy of a knight, four brasses and some grave-covers occupy their original positions in the chapel. The effigy belongs apparently to the middle of the 13th century, (fn. 130) and is represented in a suit of mail with sleeveless surcoat. The head rests on a square cushion and the feet on a lion and wyvern in combat. " }} The worm was supposedly buried under the rock in the nearby pasture; this was the 'greystone' of Coleridge's first draft, later transformed into a 'mount'. The poem was a direct inspiration for John Keats' famous poem La Belle Dame Sans Merci. Coleridge's early intellectual debts, besides German idealists like Kant and critics like Lessing, were first to William Godwin's Political Justice, especially during his Pantisocratic period, and to David Hartley's Observations on Man, which is the source of the psychology which is found in Frost at Midnight. Hartley argued that one becomes aware of sensory events as impressions, and that "ideas" are derived by noticing similarities and differences between impressions and then by naming them. Connections resulting from the coincidence of impressions create linkages, so that the occurrence of one impression triggers those links and calls up the memory of those ideas with which it is associated (See Dorothy Emmet, "Coleridge and Philosophy"). Coleridge was critical of the literary taste of his contemporaries, and a literary conservative insofar as he was afraid that the lack of taste in the ever growing masses of literate people would mean a continued desecration of literature itself. In 1800, he returned to England and shortly thereafter settled with his family and friends in Greta Hall at Keswick in the Lake District of Cumberland to be near Grasmere, where Wordsworth had moved. He was a houseguest of the Wordsworths' for eighteen months, but was a difficult houseguest, as his dependency on laudanum grew and his frequent nightmares would wake the children. He was also a fussy eater, to Dorothy Wordsworth's frustration, who had to cook. For example, not content with salt, Coleridge sprinkled cayenne pepper on his eggs, which he ate from a teacup. His marital problems, nightmares, illnesses, increased opium dependency, tensions with Wordsworth, and a lack of