Pathfinder RPG 2nd Ed: Core Rulebook Hardcover - Rules of Play says:

This comprehensive 640-page guide to the Pathfinder roleplaying game provides everything you need to set out on a world of limitless fantasy adventure! Choose from ancestries like elf, human, and goblin and classes like alchemist, fighter, and sorcerer to create a hero of your own design destined to become a legend! Based on more than 20 years of active development and playtest feedback from more than 125,000 gamers, the new Pathfinder rules are easy to learn and exciting to master! This indispensable volume contains all rules for players and Game Masters, and is your first step on a heroic new journey!