Re:Define soul. (Score 1)

Consciousness (the human based soul) is the cumulative result of self organization of billions of individual cells that have evolved to form a higher being with its own level of organization. Many millions of years ago single cells grouped together to from more complex beings. Driven by chirality and natures building blocks the cell groups evolved and became what we see as life on earth today. In our case, humans become conscious at some unknown point prior to birth but do not "think" in words until enough input has been received and the brain is programmed based on input from others and the environment.