Yes , I think that the Body Language is more important than words and more truthful e.g. Your tone of Voice is so important and its reflex more e.g. Happy , Sad , bored , worried ,.. and the same with eye contact and the exepression of the face "Smily , Surprise , Worried , Sad , Angry,.. I think this is so effective and notable than the Speech , Thank you ^_^ Keep smile.