The book Spinoza includes a foreword by a philosopher born in which year ?
Spinoza (book):  The work includes a foreword by the philosopher A. J. Ayer, while a new introduction was added to the 1987 edition. A. J. Ayer: Sir Alfred Jules "Freddie" Ayer, FBA ( ; 29 October 1910 – 27 June 1989), usually cited as A. J. Ayer, was a British philosopher known for his promotion of logical positivism, particularly in his books "Language, Truth, and Logic" (1936) and "The Problem of Knowledge" (1956).
1910