I originally picked this book up for one of the most difficult math class I would ever take. Understanding Analysis, while deceptively thin contains a plethora of knowledge spanning much of the team of real numbers.<br><br>While this book may not be for everybody, especially the casual, armchair mathematician, it certainly merits a read by those serious about their craft.<br><br>If you have not been fortunate enough to have picked this book up for one of the most difficult class you'll ever take in your math career, I strongly recommend you not the bullet and start understanding analysis.