"Nowhere is the human being more truly revealed than in his letters."
That is what the foreword began with, and there are no truer words to describe this book. Mark Twain has always had a profound way of capturing mammoth-like concepts in life into words so simple that it leaves you wondering how he managed. He has a style that is so distinct, and so strong that once you read, you cannot escape the lasting impression it will have on you. And, these letters open a portal further into Twain's thoughts and understanding of the the subjective human nature- the vast, un-written life within him.
Six volumes- it'll last me for long years to come, to read them. A letter each day, and keeping Twain with me all along is probably one of the best things. If you are an ardent admirer of Twain, do pick this up if you already haven't!