Sustainability remains a bulky term.
Sustainability is the science of the obvious.
For it should really be self-evident that we do not sacrifice that from which we live, we do not slaughter the hen that lays our eggs. And that the social dimension is worked out more clearly these days. Five years ago, you were one of the founding fathers of the Alliance for Global Sustainability, AGS for short. The first was that three leading technological universities should identify themselves clearly with the project of sustainability. At that time this was definitely not the case.