A key issue of environmental ethics is to identify intrinsic objects of valuation within the natural environment. Such intrinsic natural values are fundamental prerequisites to frame moral obligations to nature. This paper gives a global perspective on Holmes Rolston’s philosophy. By deploying the evolutionary history of life on earth, Rolston draws attention to the formidable creativity which drives it so that it commands respect and admiration.This paper contends that his work lies at the intersection of epistemology of natural sciences, moral philosophy and religious studies. The Darwinian model is used to define the main thematic concepts in Rolston's philosophy and, in greater depth, the general trend of his thinking
