An incredible collection, covering the wide-ranging scope of King's thinking and analysis, most of which we never hear about since he has been restricted to being a Civil Rights leader only, an important role but much narrower than what he was actually doing. King reflected and commented on the economic system, the U.S. international role, the development of other nations, etc., and his thinking remains germane today.
The only criticism I have of this book is that it needed a thicker editorial layer. For instance, many of the texts of his speeches are variations of each other. It would have been useful to have an essay at the beginning of such "chunks" that described the main points he was making, and how and why the speeches were modified for different situations or as his thinking changed.