The importance of language in The Tempest Discussing Derrida's vision of Western literature, Geoffrey Hartman writes that "the Western tradition has been marked... by a metaphysics of light , from the violence of light itself, from Apollonian cults to Cartesian philosophies. In the light of this emphatic light everything else appears obscure, especially the Jewish development of aniconic writing and the shy commentary on textuality" (xix). nature of Prospero's power in The Tempest as his control of natural and supernatural forces is achieved through learning the books to bring the Logos back to life. What Prospero does not fully control is the maligned character of Caliban The denigrated and reluctant servant he seems to represent the shadow of Prospero, and in light of the above statement, perhaps Caliban represents the shadow of our light-infused Greco-Roman style of mastery of the material world. The text tells us that when Prospero first arrives on the island, Caliban willingly reveals his secrets to him. Only when Caliban threatens the chastity of Prospero's daughter, Miranda, does the relationship transform into that of master and slave. Prospero thus draws the boundary between the kingdom of shadow and purity. His action suggests that sexuality must also be kept in a role of servitude if one is to maintain control of one's kingdom. By asserting this schism, Prospero simply reinforces the dualistic nature of the Western tradition. In despising Caliban, Prospero embodies the extreme dualistic nature of the West with respect to its perceived schisms existing between light and dark, mortal and immortal, good and evil. Caliban's transgression is therefore never erased and bears the diameter... . half of the sheet ......are Commentaries. (1877):787-800. Rpt. Scott. 304-307.Hartman, Geoffrey H. Save text: Literature/Derrida/Philosophy. Baltimore: Johns Hopkins UP, 1981. Other, Sir Thomas. "Utopia." The Longman anthology of British literature. Vol 1. Ed. David Damrosch. New York: Addison-Wesley Educational Publishers Inc., 1999. 637-706.Platt, Peter. "Shakespeare and rhetorical culture". A companion to Shakespeare. Ed. David Scott Kastan. Massachusetts: Blackwell Publishers Ltd., 1999. 277-296. Sacks, David Harris. "Political culture". A companion to Shakespeare. Ed. David Scott Kastan. Massachusetts: Blackwell Publishers Ltd., 1999. 100-116.Shakespeare, William. The Storm. Ed. Rex Gibson. Cambridge: Cambridge UP, 1995. Snider, Denton J. “A Review of The Tempest.” Shakespearean drama as a commentary: the comedies. (1890). Rpt. Scott. 320-324.