Kirk provides an excellent overview of the philosophical study of consciousness that is at once packed with arguments and accessible to those who are just beginning their study of consciousness.

- Richard Brown, Professor of Philosophy, LaGuardia Community College, CUNY, USA,

The zombie thought experiment has tormented philosophers for decades. In an ambitious book, Kirk presents an ingenious argument intended to remove the zombie threat once and for all. Like everything in philosophy, it’s wildly controversial. But if it works, Kirk has found the Holy Grail: a solution to the hard problem of consciousness, and a theory that can integrate consciousness into our scientific picture of the world.

- Philip Anthony Goff, Associate Professor of Philosophy, Central European University, Hungary.,