"Unless we can change this trajectory the human population will peak in the 2070s or 2080s at about ten billion and fall back to about eight billion by 2150, and — if we continue at this rate — be at a mere two billion people by 2350.
"This is, the book makes abundantly clear, bad. Contrary to Ehrlich’s 1960s arguments Spears and Geruso convincingly argue that things have improved for humans as our numbers have grown. “Progress comes from people” is their attitude. Rather than using up finite resources, having more people has meant more technological advancements and richer, better lives for everyone."