A treasure trove of practical knowledge for effectively hacking Lisp in the 21st century. This is your chance to learn from the master!
[Luke Gorrie, creator of SLIME]

A piece of jewel. Overall, an amazing book and one that must be on your desk if you are a serious Lisp developer.
[Rangarajan Krishnamoorthy (full review)]

If you want to become a Lisp expert, this book is for you.
[Edgar R. Chavez (full review)]

A book every Common Lisper should keep within arm's reach.
[lisp-lang.org]

I have been programming in Common Lisp for the last 35 years, but when I went through the new book, I felt like a kid in a candy store, discovering all kinds of new/old patterns that were enlightening to me.
[Jans Aasman, president and CEO of Franz Inc.]

The optimization chapter is excellent. I'm not aware of any other resource that summarizes all this information and the explanations are clear. This is a great reference.
[Arthur Lemmens, organizer of the ECLM]

This is a reference book of advanced CL techniques, but I've read it cover to cover, and learned a lot from it, even though I've been using Lisp for more than a decade.
[Peter Salvi]

Weitz writes with clarity and concision, and has produced a book which can be read in one sitting or dipped into at leisure and will extend the practice of even seasoned Common Lisp professionals.
[Christophe Rhodes, SBCL maintainer]

Errata (PDF; 2024-03-10)
Code for the book (ZIP archive)
Preview at Google Books
YouTube review by Nino Ivanov
SpringerLink
The book at Amazon
Other books I wrote
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