From the Introduction to the Core Rules:
Adventurers are not going to be Wizards or Clerics. Wizards are going to stay in their towers and colleges learning more about magic, and Clerics are going to stay in their temples. No, adventurers are going to be... well... adventurers! Let's call it the Adventurer Class, sort of a cross between Fighting-Men and Rogues.
If a Monster's stats can be described like this: (HD1, AC12, MV10, 4HP, #AT1, 1d8 Longsword), then can a player character (PC) need much more? For a PC, we will list Class Level (instead of HD), include XP (experience points) and plus a few more stats, but the whole Character Sheet should fit on an index card. A player should be able to create a beginning PC in no more than 5 minutes.