A Porta

I am made of wood
Wood, dead matter
But there is nothing in the world
More alive than a door

I open slowly
For the little boy to pass
I open carefully
For the boyfriend to pass

I open very pleased
For the cook to pass
I open suddenly
For the captain to pass

I just don't open for those people
Who say (I don't care)
That if a person is stupid
They are stupid as a door

I am very intelligent!
I close the front of the house
Close the front of the barracks
I close everything in this world
I only live open in the sky!