Acharya Prashant explains that man's tendency to exploit other species stems from a narrow self-concept where the ego defines itself merely as the physical body or a specific identity. This division creates an 'other' that is then utilized for self-interest, which is the antithesis of spirituality. True spirituality involves broadening ego boundaries and dissolving the narrow self, making it inherently resonant with veganism. He argues that in today's era of unprecedented biodiversity loss, it is impossible to be truly spiritual without being vegan, as compassion must extend to all flora and fauna.