How to decode that Pokemon puzzle?

Question

After beating the Elite 4 in LeafGreen and catch 60 Pokemon, you can go to talk to the Team Rocket members just before Mt. Ember. So inside there there are some things (I first thought it was just like the displays they have in museum), who say something. Every one contains one or more 3x3 matrices, where some cells are bolded (I will use * for them).

I will write every one from top left to bottom right:

*+ *+ **   |   ** *+ **      |   ++
++ *+ ++   |   +* +* *+      |   ** 
++ ++ ++   |   ++ ++ ++      |   +*
--------------------------------------
** *+ +*   |   +* *+ *+      |   ++
** ** *+   |   ** ++ *+      |   *+ 
++ ++ ++   |   ++ *+ *+      |   ++
--------------------------------------
** ** *+   |   ** ** *+ +*   |  
++ +* +*   |   *+ ** ** *+   |  
*+ *+ *+   |   *+ *+ *+ *+   |   
--------------------------------------
+* *+ *+   |   +* ** ** *+   |   
** ++ *+   |   ** ++ +* +*   |   
*+ ** **   |   +* ** ** **   |   
--------------------------------------

and then in the top room we have 8 messages:

1)

2)

3)

4)

5)

6)

7)

8)

After searching the Internet both with Yahoo! and Google search, I found the meaning, but not the methodology. I don't have an Alakazam in my party, that's why I am asking you experts, how to crack that code?

---

PS - If this is something really trivial in newer generations, excuse me, but I am a guy of the 251 Pokemon.

Answer 1

This is Braille, the dotted code used for the blind:

The first message reads:

ABC DEF  .
GHI JKL  ,
MNO PQRS
TUV WXYZ

The next messages read:

EVERYTHING
HAS MEANING
EXISTENCE
HAS MEANING
BEING ALIVE
HAS MEANING
HAVE DREAMS
USE POWER.

You can find more information about Braille on Wikipedia, or on its use in the Pokémon games on Bulbapedia.