What do these two stats mean?

[zaz]

HP and SP?

And if developers too happen to read this, I wonder why meditating has no effect on Spirit, Libido and Charisma..

 

[zaz]

Also, what is that maze meant to be there for?

 

[Emerald]

HP = Health Points, self-explanatory.
SP = Spell Power a.k.a Mana.