A Plowman does the assigned masculine work of the fallen world, as specified in Genesis 3; women (the "distaff" side) weave or spin. Blake thought of engraving as a kind of plowing and himself as Chaucer's Plowman, but in his poetry plowing can also be a metaphor for the disruptive aspects of revolution or even the processes of mutability. Various characters use plows, including Urizen, Los, Rintrah, and others. In Isaiah 2:4, the destructive alternative to the plow is the sword. See also harrow and mill/Miller.