The Rights of Nature movement is a quickly growing global phenomenon. However, it is not always obvious what the movement really means. What is its underlying experience? How can its transformative depth be formulated? What is the meaning of this depth? Starting from the ‘Universal Declaration of the Rights of Mother Earth’ this essay seeks to elucidate the ontological meaning of these questions through attending to the possible relation of the Rights of Nature movement to Heidegger’s turning toward Parmenides, in the sense of ‘primordial thinker’, or ‘essential thinker’, that is, a thinker who in an essential way thinks the origin as such. This ‘origin’ will be dealt with in relation to the oikos of ecology. In other words ‘essential thinking’ will be brought forward as a thinking that essentially makes possible the mindful awareness of this oikos, this ‘home’, ‘house’, ‘abode’, or ‘place of dwelling’. A chief point of the essay is that an essential experience of this oikos is necessary if the ontological implications of the Rights of Nature movement is to be disclosed.