In Bunyan's 'Pilgrim's Progress' you may recall the description of the Man with the Muck-rake, the man who could look no way but downward, with the muck-rake in his hand; who was offered a celestial crown for his muck-rake, but who would neither look up nor regard the crown he was offered, but continued to rake to himself the filth of the floor.(Roosevelt, 14 April 1906)
In 'Pilgrim's Progress' the Man with the Muck-rake is set forth as the example of him whose vision is fixed on carnal instead of on spiritual things. Yet he also typifies the man who in this life consistently refuses to see aught that is lofty, and fixes his eyes with solemn intents only on that which is vile and debasing. [...] the man who never does anything else, who never thinks or speaks or writes, save of his feats with the muck-rake, speedily become, not a help to society, not an incitement to good, but one of the most potent forces for evil."