I have a purpose, an end to which I aim at; but I am also a part of nature, a fragment of the universe.
So in my being can I say the universe has a purpose?
I follow, or rather am the expression of my will. That is my will is my law - the law that I follow. My will is my purpose.
An electron as it leaps from one orbit to another follows a law. This law is its purpose.
The universe is full of purposes - none of which is substitutable for each other - despite there being family resemblences - and at some level those substitutions can be made. One worker for another is substitutable - but not in themselves - in the world that they carry. Or one electron for another, but in themselves, in the history that they carry - their world - they're not substitutable either.
So the world is a multiplicity of purposes in its inner sense.
To see the world have no purpose is to see the world in its outer sense only.
The universe, the world is an outer expression of all these wills - they are a representation of it as such.
On reflection, these ideas look Schopenerian to some extent.