<span>This article gives a general introduction to reasons why metaphysics might be considered a human constant. The basic metaphysical stance is rooted in human nature and human consciousness, being open to change and continually challenged. The biological rootedness of metaphysics relates to human consciousness, human dualisms, language (especially metaphor) and the fact that humans are self-transcending beings. It is suggested that the dualisms humans experience and express are not foreign to nature and part of the knowledge process. It is argued that metaphysical concepts such as unity, holism and relatedness are still necessary for human self-understanding and understanding of reality. The focus on the exclusivity of the human mi...