From the reviews:

“Hoare is one of my computer science idols. … This book was written to commemorate his 75th birthday, and contains the lectures that many of his past and present colleagues presented in honor of this occasion. … I did glean a great deal of information from the book. … the book is quite interesting … . the chapters have some connection to those areas of computing where Hoare has contributed profusely, and hence it is a fitting tribute to this extraordinary computing science visionary.” (Sandeep Shukla, ACM Computing Reviews, February, 2012)