What is essential - the one thing that could stop us being coarsened to other lives - is that we feel a great, living wave of animal life all around us, covering the earth.
With each passing decade, history becomes less real for us, less immediate and essential to our way of life, and so, like 'green' nature, more of a commodity or an advertising gimmick.
The great pleasure that comes from reading poets such as Mark Doty and Marianne Moore is the realisation that the essential virtues - compassion, wonder, humility, respect for the mysterious - are far from conventionally heroic.