If you haven't read this book, the time is now. This book is so blatantly written by an INTP it's unbelievable. His views on free thought are distinctly that of an INT, and it's easy to see how his focus in the book is on succinctness, leading me to Ti dominance. Statements that he made about the value of openness to a change in belief also are indicative of P-ness (haha). "Only when you’re free from allegiance to a specific idea, and put faith in your ability to learn, can progress happen."
Amazon allows you to read the first 2 chapters (and unfortunately only most of the third chapter), which I highly suggest that you do. The book's focus is on everything that I could ever ask out of a book--less on telling you what to believe, and more on why you should (and shouldn't) believe whatever you believe. You'll find yourself relating to and pondering each and every point that he makes in each of the essays.
"Yeah, nice try, Mindfire author Scott Berkun."