This is one of the most important books of the 20th century and lies at the core of much of the philosophical thinking that has progressed to the present day. It was at the very beginnings of linguistics taking a core place within philosopy and contains revelations regarding the place language has with regard to human conditioning. It has relevance to many fields including quantum physics, language, meditation, thinking, conditioning, government,education, semiotics.etc, etc. A truly groundbreaking book.