The ecological paradigm as well as the green movement is characterised by its various philosophical roots and activism backgrounds. The ecological thought refers to ancient spiritual and philosophical world's view (cosmic vision of unity contained in old religion, oriental spiritualities, and romantic movement, in particular its Naturphilosophy), as well as to the new scientific concepts that emerged with the development of the ecological science. The green movement originated from older movements concerned by the preservation of nature or animal's welfare that already exist a century ago, but really emerged during the seventies, inheriting from the activist virulence and the contesting ideology of the protest student's movement of the late sixties.