This book is a compilation of the best papers of the Nobel Laureate Alexei Abrikosov, presenting a scientific overview of Abrikosov's life work in superconductivity. It also includes some biographical material and recollections of colleagues and friends.In addition to Abrikosov's famous paper in which he predicted the existence of superconducting vortices, which won him the Nobel Prize, the book also contains many of his other groundbreaking papers on superconductivity, condensed matter theory, and quantum field theory. Reading these articles will help the reader gain an insight into the great physicist's way of thinking and creative thought process. Any level of interested reader, from undergraduates to active research scientists, can benefit.