What philosophy is defined by... ? (along with some literary works of this philosophy)?

I am looking for philosophies that reject the idea of religious cause and/or human purpose (outside simply living).





Something along the lines of Existentialism or Absurdism.





Also, if possible, please include the names of poems or short stories and their authors that go along with the philosophy. Existentialism or Absurdism works are accepted.





Best answer will be chosen by the quality (if not, then quantity) poems/short stories provided.





Thank you in advance.What philosophy is defined by... ? (along with some literary works of this philosophy)?
Relativity -





No up, no down.


No day, no night.


No absolutes.


No left, no right.





No map, no guide.


No hit, no miss.


No place to stand.


No that, no this.





No good, no bad.


No plan, no whim.


Just points of view.


No bright, no dim.





All whole, no part.


Obey your heart.





Robert M. Wilson.