Good = Motivated primarily to help others
Evil = Motivated primarily for self or for a small group
Neutral = A little of both. Usually does good things but won't do anything such as putting them self in unneeded danger or do some form of self sacrificing for others.
Lawful = Has a strict moral code and behavior guidelines. Will never break these, ever.
Chaotic = Doesn't care for authority, and will do whatever it takes to further his agenda (good or evil). Usually acts without thinking.
Neutral = In between. Usually has some form of morals and respect for authority, but will break them if the situation requires.