"Crash Course" and "In-Depth" Are Oxymorons
The book cannot be both a crash course and provide in-depth coverage of philosophy, as the title promises; indeed, Casmiro's book is more the former than the latter. It reads like well-written undergraduate notes, covering the main contributions of several dozen leading philosophers and schools of thought with half-page summaries. Almost as an afterthought to inflate the page count, more than half of the book is filled with excerpts copy/pasted from leading--and public domain--philosophers. It's valuable for providing a list of philosophers, even including a few lesser-known ones, but the quality of information is inconsistent and inadequate.