Alex Steffen
Alex Steffen

There's no law of physics that says we have to be an unsustainable society - in fact, quite the opposite. The planet's ready to work with us if we're ready to think differently, but we do have to make that jump and start to do things in new ways.

Alex Steffen
Alex Steffen

The brutal reality is that newer, more sprawling suburbs - and especially the cheap boom-years exburbs - aren't just a bit unsustainable, they're ruinously unsustainable in almost every way, and nothing we know of will likely stop their decline, much less fix them easily.

Amber Rudd
Amber Rudd

If you run your company pension into the ground, saddling it with massive, unsustainable debts, we're coming for you.

Angela Rayner
Angela Rayner

We need a sustainable system of student finance that promotes opportunity, encourages aspiration, increases social mobility and is governed by fairness. But all the Tories can offer is unsustainable, mounting debt, punishing students for wanting an education. And discouraging thousands of young people from climbing the ladder to a better life.

Arsene Wenger
Arsene Wenger

The communist model does not work economically, we all realised that, but the capitalist model in the modern world also looks to be unsustainable.

Barton Seaver
Barton Seaver

Why are fish unsustainable? Because they're popular. What makes restaurants work? Popular dishes that people come back for.

Ben Bernanke
Ben Bernanke

To achieve a more balanced international system over time, countries with excessive and unsustainable trade surpluses will need to allow their exchange rates to better reflect market fundamentals.

Ben Sasse
Ben Sasse

Our pandering politicians compete to add names to the dependency of entitlement rolls instead of evaluating the success of these programs by how many people leave the dole and are restored to an independence. And these bulging entitlements are saddling our offspring with unsustainable generational debt.

Caroline Lucas
Caroline Lucas

Continuing down a path where profit is king is unsustainable for our society, our health and our planet.

Charles Krauthammer
Charles Krauthammer

If you believe that health care is a public good to be guaranteed by the state, then a single-payer system is the next best alternative. Unfortunately, it is fiscally unsustainable without rationing.