This book offers a look at mathematics from different angles by reviewing 99 different proofs of the same theorem. Each chapter presents solutions to a generally unremarkable cubic equation in different styles - different in terms of historical context, level of formalization, and richness of imagination. You will encounter medieval, topological, poetic, chromatic, electrostatic and psychedelic variations; discover the unexpected connections of fields of the human spirit ranging from mysticism to technology and from architecture to sign language. Showing a rare combination of humor and scientific self-confidence, Philip Ording weaves these variations into an accessible to the general public and a diverse story about nature and practical mathematics. Using drawings, rare books and other pictorial material, the author illustrates the flexibility and creative potential of mathematics, refuting its reputation for accurate, rigorous and dry science.