As someone more accustomed to the sort of character-building systems seen in universal/toolkit-style rpgs, the standard D&D/Pathfinder approach to races has long been a source of annoyance for me. So for me, Spheres of Origin has been an absolute godsend. Using this book instead of the core race rules effectively puts an end to the frustrating concept of certain races being optimal/suboptimal for certain classes. I'm also continually amazed by how useful this book has been for stating up nonstandard races/species/etc for homebrew settings, or for adapting "core" ones to settings where not all of the default Pathfinder lore is being used.

If there was any one thing I could knock a point off my review for, it's that there are a couple of origin categories I would've liked to have seen more talents for. Even so, the book is complete enough that I'm not comfortable deducting a full point for that. So let's just call this review a 4.5/5 and a wholehearted recommendation.