Sean McGrath (philosopher) written [accounts of Heidegger] I have come across”. The work of unraveling the complicated relationship of secular forms of thought to theology led McGrath to his next major project: psychoanalysis. McGrath’s examined how the psychoanalytical concept of the unconscious originates in German Idealism, especially the work of the German philosopher, Friedrich Schelling. With the support of a Humboldt fellowship, and after four years of research in Germany and Switzerland, McGrath published his third book, "". "The Dark Ground" received many favorable reviews: “Among the most imaginative, original, at times exhilarating, studies of Schelling to appear in recent years,” wrote Jason
Nietzsche: Philosopher, Psychologist, Antichrist 1974. In 2013 an edition with a new foreword by the philosopher Alexander Nehamas was published. "Nietzsche: Philosopher, Psychologist, Antichrist" was reviewed by Chris Terry in "Times Higher Education". The book was also discussed by the philosopher Richard Rorty in "The New Republic". Rorty described the book as "path-breaking", but wrote that it had been superseded by the philosopher Richard Schacht's "Nietzsche" (1983), which in Rorty's view was more comprehensive, better organized and more helpful to readers who were new to Nietzsche and needed help in understanding the apparent contradictions in Nietzsche's views. "Nietzsche: Philosopher, Psychologist, Antichrist" received positive reviews