Happy Birthday, my Dutch friend!
You are finally 18.
Thankfully, now you can do most of the adult things, such as drinking, smoking and even playing violent computer games such as Grand Theft Auto: San Andreas; enjoy your freshly opened capabilites!
Just kidding.
Seriously though, you are a smart and intelligent though young guy, I am glad that, during the year of our friendship, we managed to discuss a lot things and find out that our points of view mostly about those which are related to the freedom in general and freedom of person in particular are similar. In many terms it was useful for me. I wish you to keep your way to obtaining everything you want; finish your school successfully, join the Uni of your dreams, and, mainly, keep developing yourself and enjoy your being.
Now congratulate our mr. Admin!