Politicians and business leaders tell us that climate change can be solved with new technologies, but global emissions keep rising. Engineers show us technological options that could be deployed quickly, but there is no plan there to save us. We can no longer wait for solutions to climate change. To reduce our emissions quickly, we need to cut back on some aspects of modern life through inventive tweaks - and via restraint. Restraint is normal. It is also fundamental across all religious faiths. In this volume, Julian Allwood, an engineer, and Andrew Davison, a theologian, offer a fresh perspective and prescription for combatting climate change. Rather than starting from the vantage points of economics and politics, they rethink climate action in the long tradition of the virtues - Courage, Justice, Prudence, and Temperance -- along with Faith, Hope, and Love from the Bible. By acting in good faith now, a safe climate becomes an expression of our faith in and love for humanity.