Audio recording of a lecture given by Philip Ording on May 2, 2025 as part of the Dean’s Lecture & Concert Series. The Dean’s Office has provided this description of the event: “There is no shortage of evidence that professional mathematicians describe their work in aesthetic terms, but the terms they use, at least publicly, are limited. The oft-repeated ‘beauty’ and ‘elegance’ may be important components of mathematical taste, but they fail to convey its range or subtlety or how it relates to literary and aesthetic experiences beyond mathematics. This talk will highlight the material differences in logic, diction, imagery, and even typesetting that give tone and flavor to mathematics.”