Herbert Spencer was one of the foremost polymaths of his time, described as "the single most famous European intellectual in the closing decades of the nineteenth century". He contributed to a topics as diverse as ethics to anthropology and economics to philosophy. "First Principles" is his attempt to simplify and assert the core topics of philosophy in the modern age. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.