Is necessary the Constitution?

In my opinion I think that the Constitution is a very important thing in our country. It is the collection of the most important laws and rights in a country, where you can find how is the state organized. Without it the country will be a chaos. Everybody will do whatever he wants. We need it to be coordinated, to know how the state works. It's a guide where the politics and the people should search if they don't know something. 

The Constitution it's the essencial part of a country, the rights and duties that every person has to follow.