Strength: This shows how much damage you do with your pointy weapon. It also regulates how much you can carry, and factors into your HP.
Intelligence: Your total brain power. This factors into MP, and tells how powerful your magic is.
Agility: How catlike your reflexes are. The higher this is, the more balanced you are. Factors into your SP.
Vitality: This is DEFINITELY the most important ability of them all! This shows how much endurance you have. Factors into your HP and SP.
Luck: I have NO idea what this does. I'll put it up when I find out.
Weapon Use: This shows how good you are with sticking your pointy-thingy into the enemy-thingy. Fighters and Paladins are GOOD with this.
Parry: This is how well you block attacks with a shield (or weapon). I don't really use defense that much, to tell the truth.
Dodge: How well you can move to the side of an attack. Dodge is more useful than Parry, if you ask me.
Pick Locks: The first thief skill. This shows how good you are at picking locks. Unfortunately, you can't practice it.
Stealth: This measures your sneaking abilities. You need these to steal stuff without waking up the neighborhood.
Throwing: You need to know how to throw stuff before you can use it. Therefore, Fighters and Thieves need this skill badly.
Climbing: If the impenetrable fortress has a wall, you have to climb it. Thieves need this skill desperately.
Magic: If you're a Wizard, then you need magic. This is required in order to use magic, and factors into your MP.
Communication: Your hero needs to talk better than a rock on the ground if he's going to get anywhere. This works into your bagaining.
Honor: The measure of how good a guy you are. This cannot be increased in the beginning, and is VERY important for Paladins.
Hit Points (HP): Your total life. When it hits zero, you're dead. So try to keep it above zero, okay?
Stamina Points (SP): Your physical endurance. After all, you can only take so much before you collapse. This is used up with every physical action you perform, and if it runs out, physically doing anything drains your HP.
Mana Points (MP): The power of magic requires Mana in order to work correctly. This goes down with every spell you cast.