"I would like to recommend the book 'Perspectives in Crystallography' to all crystallographers." -Huimin Lin, Editor of Crystals (IF: 2.075, ISSN 2073-4352), SCIE journal, MDPI, BASEL). "The author of the book is well known for his significant contributions to the development of beamlines dedicated to biocrystallography at several synchrotron light sources. Helliwell is also among the brightest users of this dedicated instrumentation, and the results published under his leadership are among the most important in elucidating the molecular structures of proteins by X-ray and, sometimes, neutron diffraction... Among others, the author has held important positions at the service of the University of Manchester, the International Union of Crystallography (IUCr) and the European Crystallographic Association (ECA). Helliwell has always paid great attention to the promotion of crystallography at various levels: from primary-school pupils, to students looking for their choice of university studies and funders of scientific research... ...recommended to biocrystallographers looking for highlights of the history of their topic and, more generally, to people interested in the crucial impact of synchrotron radiation on structural crystallography." -Giovanni Ferraris, Acta Cryst. (2016). A72, 512-513. "Helliwell's Perspectives is a collection of articles and lectures by the author celebrating the 100th anniversary of the first crystal structures (1912) and the UNESCO International Year of Crystallography. The book covers a broad range of topics..." -Joseph Ferrara for the International Union of Crystallography Newsletter, Volume 24, Number 1. "The current book describes efforts during the International Year of Crystallography 2014 to make the public aware of the impact in everyone's life of crystallography... Three excellent chapters describe the work of some British pioneers in this field... It is no surprise that this book also covers some of the significant advances in synchrotron and neutron crystallography over recent years... Another challenge that is described in the book is the determination of the protonation state of various sites in a protein... One value of the book is to have these articles in one volume, many of which have previously been published in this journal. The author is a highly experienced crystallographer, John R Helliwell, now retired from his professorial duties in Manchester. He can now choose among challenging tasks all over the world where his broad expertise is needed, including being the editor of this journal." -Anders Liljas, Biochemistry and Structural Biology, Lund University, Sweden, for Crystallogr. Rev. May 2016, http://dx.doi.org/10.1080/0889311X.2016.1191201.