"History teaches us that men and nations behave wisely once they have exhausted all other alternatives"
"Then I say the Earth belongs to each generation during its course, fully and in its right no generation can contract debts greater than may be paid during the course of its existence"
Thomas Jefferson, September 6, 1789
Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs."
The Report of the U.N. Brundtland Commission, Our Common Future, 1987
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Benchmarking the performance of cities across energy, water and environment systems related metrics presents an opportunity to trigger policy learning, action, and cooperation to bring cities closer to sustainable development.