But then ... I have to measure my words as I think it is scandalous book, this author before reading the books had for me something sacred. Knowledge is essential for me and I would never have thought to take a book of my life. Yet with Josseph Messinger I did, then the real question is why has t he so successful? Simply because he or his editor are marketing professionals know they sell.
You will learn absolutely nothing worthwhile. What he says has no scientific value. Anyway I'll stop there.
The best advice I can give you is to read authors such as Paul Ekman Philipe Turchet or so. These are size in the area of non-verbal.