There are many books about programming, but not so many about code. Whereas a program is a work of engineering, code is the underlying metaphysical ideal. We all strive to write great code, solid code, readable code, beautiful code, to understand what makes great code, and even at times to grasp how the code we write relates to the hardware on which it runs.
For the next week, O'Reilly is having a 50% off sale for ebooks about code, including my own Code: The Hidden Language of Computer Hardware and Software:
Check it out, and remember: Buying a book is the best way to make yourself happy and an author happy at the same time.