In this quote by Allen Ginsberg, he draws a powerful parallel between the pollution of the Earth and pollution of the mind and consciousness. By stating that Earth pollution is identical to mind pollution, Ginsberg suggests that the state of the physical world is a reflection of the state of our thoughts and emotions. Furthermore, his comparison of consciousness pollution to a "filthy sky" speaks to the detrimental effects of negative and toxic thoughts on our mental wellbeing. Overall, Ginsberg's words serve as a reminder of the interconnectedness between our inner world and the environment around us.