"Russell in 90 Minutes" is a concise biography of Bertrand Russell by Paul Strathern, covering Russell's life and philosophical ideas. The book examines Russell's passions for love, knowledge, and human suffering, which shaped his personal life and intellectual pursuits. It explores his contributions to epistemology and logic, including his work with Alfred North Whitehead on Principia Mathematica, and the impact of his political views. The text also includes excerpts from the book itself, a chronology of Russell's life, and suggested further reading. Finally, biographical information on Paul Strathern is provided.