Overdrafts on aquifers are one reason some of our geologist colleagues are convinced that water shortages will bring the human population explosion to a halt. There are substitutes for oil; there is no substitute for fresh water.

— Paul R. Ehrlich The Population Explosion (1990)

More quotes by Paul R. Ehrlich

Paul Ehrlich: 'Collapse of civilisation is a near certainty within decades' The Guardian (2018)

Paul Ehrlich: 'Collapse of civilisation is a near certainty within decades' The Guardian (2018)

The Population Explosion (1990)

Quote text and notes from Wikiquote: Paul R. Ehrlich (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.