Your memory is certainly the most crucial aspect of who you are. Without it, arguably at least, consciousness itself borders on irrelevance, and identity no longer exists. Most of us think of memory, metaphorically, as shining a spotlight on images, sounds, and emotions from our past. Reading Daniel Schacter's fascinating text, Searching for Memory, The Brain, the Mind, and the Past, I realized just how deceptive and simplistic that notion is. In fact, every time you speak, or write something, or read, or drive a car, you're calling on "procedural" memory which allows you to learn skills and acquire habits, and/or "semantic" memory, which includes conceptual and factual knowledge. Even the spotlight-type memories you do have can be divided into "field" memories, which mimic your perceptions at the time of the original experience, and "observer" memories, which where you actually see yourself from the outside. (The latter is common when recalling early-childhood experiences.) Searching for Memory is beautifully written, and teeming with stories and anecdotes that illustrate the nature of memory in a way that makes the absorption of its insights effortless. My only complaint about this book is that my wife kept trying to read it over my shoulder. If you're married, I suggest you order two copies.