This article examines the political and philosophical problem of partisanship—the false inflation of a part into a semblance of a whole—in Plato's Timaeus. Timaeus's “likely story” about the cosmos both exemplifies and addresses this problem, which first comes to light in the dialogue's opening pages. Reflection on the problem of partisanship allows us to grasp Timaeus's understanding of the simultaneously erotic and thumotic work of philosophy, the work of making things whole. While Timaeus is moved by a Socratic love of wisdom, I argue that he implicitly corrects the picture of the erotic philosopher Socrates sets forth in the Republic.