 Why should philosophers pay attention to microbes? Many philosophical topics seem quite obviously unmicrobial, insofar as they focus on issues concerning human capacities, activities, and interests. Even philosophers of biology used to focus almost exclusively on animals, meaning that the field neglected many lineages of life. But redressing that imbalance is underway, and fungi and plants as well as microbes are receiving some attention in philosophy of biology. However, such topics are a minority interest in philosophy at large, where the focus is mostly (if not exclusively) on humans and our minds, worldviews, reasoning, and other endeavors. Microbes are minute and mindless, which makes them hard to appreciate without a microscope. Nevertheless, paying attention to microbes is justified in broader philosophy of science as well as other general philosophical fields.