Auras are also known as life-force energy, prana, and chi. Ancient meditators glimpsed this edge of spirit where it meets and becomes the dream of being human and gifted us dreaming humans with metaphoric ideas of how spirit becomes the dream of physicality and being human.
Chinese ‘meditators’ glimpsed the edge of spirit as life-force energy and called it 'chi,’ or qi. Chinese Taoist belief tells us that the world, universe really, comes from a 'great void'—a 'Nothingness' the Buddha would say. This 'Nothingness' however is anything but nothing as we Westerners would define it. In Chinese Taoist, and other similar beliefs, this great void or nothingness is the essence of everything. The void is made up of chi.
Taoist wisdom wisely notes that the universe is constantly changing. The one thing we can count on consistently is change. The way, or path or route or road, of change is the Tao, hence, Taoism. Maybe it's best to think of the Tao as the way or gate through which all things move.
Most of us Westerners are now familiar with the symbol for the Tao, the tai chi symbol, this blog post's picture above. It represents chi breaking down into its initial components of Yin and Yang. There is no doubt that we all recognize ourselves as living in a universe of dual forces. Yin is negative, meaning passive and receptive, as best represented by we females. It is soft. It is dark. It is night. It is mystery and shadow. Yang is positive as in active and action and doing, male energy. It is hard, like the harsh sunlight of daylight.
These two dual energies make up chi and flow with the Tao. We all want positive all the time, but the Taoist symbol for Yin and Yang tells us that goes against the flow. Sometimes things must relax and be receptive after which they can flow actively with passion again. Ideally, chi reaches maximum rest (the black in the symbol) and then, let's say gets bored, and the little dot of white invites it to action again. Then it reaches maximum activity (the white) and needs some rest, the black dot inviting it to rejuvenate itself again.
This is chi as it flows in the world and within us humans. Of course, there is much more to Taoist philosophy than just this. Everything in the universe, certainly in our world, and even within we humans—including our physical bodies, our thoughts, our emotions—is some sort of expression of chi. The flow of chi within we humans is represented by a network called 'meridians.'