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You may consider yourself an individual, but as a cell biologist, I can tell you that you are in truth a cooperative community of approximately fifty trillion single-celled citizens.

Bruce H. Lipton (2010). “The Biology of Belief: Unleashing the Power of Consciousness, Matter and Miracles: Easyread Large Edition”, p.28, ReadHowYouWant.com
You may consider yourself an individual, but as a cell biologist, I can tell you that you are in truth a cooperative community of approximately fifty trillion single-celled citizens.