Being that this is a book by Stephen Hawking, it isn't the easiest in the world to read. That being said, it's incredibly smart, and if you can manage to get past the first few chapters, you'll start to see that the big message here is all about time, and that it has a clear direction. If anything, reading this book will make you feel a little closer to understanding the universe (i.e., it'll make you smarter!).