When creating a new character, you don't need to choose a class only, but a race as well. Every race has advantages and disadvantages that have an effect on the basic attributes of a character. A negative value may neglect a classes' attribute when choosing a race.

RaceStrengthDexterityIntelligenceConstitutionLuck
Human-----
Elf-1+2--1-
Dwarf--2-1+2+1
Gnome-2+3-1-1+1
Orc+1--1--
Dark Elf-2+3+1-1-
Goblin-2+2--1+1
Demon+3-1-+1-3