I think that the feature of the spoken language of Senator Obama's speech revolves around making Constitutionality more relevant to the real world. The fact that he invokes significant cases like Brown v. Board of Education, or in how the Senator discusses the Constitutional Convention's failure to address and solve the issue of slavery, as well as how the primary goal of the Preamble sets out to make democracy an experiment would all represent specific uses of spoken language that helps to bring out the meaning of the speech. The language devices that the Senator uses roots itself in the notion that the Constitution can be seen as a document that does have relevance to modern contextual social problems such as poor education, lack of affordable health care, or unequal housing. The language used is Constitutional, connecting to the Senator's work as a Constitutional scholar in reflecting how the document can connect to practical reality, and the political reality that enveloped the landscape and discourse of 2008. In this, I think that the language used is rooted in the Constitution and seeking to apply it to modern challenges.