Garry Wills's 'Lincoln at Gettysburg' shows how Abraham Lincoln's 272-word address transformed American self-understanding through the power of words alone. Wills, a historian and classicist, places the speech in multiple contexts: the specific occasion of dedicating a cemetery for Union dead, the broader tradition of funeral oratory going back to Pericles, and Lincoln's own intellectual development. He demonstrates how Lincoln accomplished something extraordinary: redefining the Constitution's meaning by locating its essence not in the document itself but in the Declaration of Independence's claim that all men are created equal. Before Gettysburg, America was understood as a compact of states; after, as a nation dedicated to a proposition. Wills traces the linguistic and rhetorical techniques Lincoln employed, from his use of birth-death-rebirth imagery to his strategic deployment of passive voice. He also sets Lincoln's achievement against the verbose and now-forgotten oration by Edward Everett that preceded it, showing what distinguishes memorable speech from mere eloquence. The book makes a powerful case that words can reshape political reality, that Lincoln's speech did not merely describe American ideals but reconstituted them. Readers will gain both appreciation for a canonical text and tools for understanding how language shapes collective identity.