A sustainable development is entirely dependent on how we define nature. Like everything else, we interpret nature through our socially and individually shaped mental filters, and it is ascribed different attributes depending on context. Conse-quently, in this chapter “nature” and the “natural” are treated as discursively con-structed and contextually conditioned. Previous research has identified a discursive gap between humans and nature that permeates most constructions. The chapter ar-gues that this human-nature dualism is a fundamental obstacle to lasting sustainability because it constitutes the legitimating foundation for the continuous exploitation of na-ture. If nature is not included in our identity in-group, there is no obvious reason to protect it. When discursively reproduced, the human-nature dualism keeps us impris-oned in existential separation and prevents us from experiencing the interconnected-ness of all lifeforms. Hence, in this chapter, the human-nature dualism is discussed as a tyrannical (and ideological) structure. However, when duality dissolves and the seam-less web of life becomes evident, through direct experience rather than intellectual knowledge, caring for the more-than-human world comes effortlessly. The chapter sug-gests that the concept of deep sustainability provides a platform to explore more pro-foundly such philosophical questions associated with both social and environmental sustainability.