Doctor Rowan Williams, the Archbishop of Canterbury, told worshippers at Canterbury Cathedral in south-east England, that humanity needed to protect the world created by God.
People should treat each other and nature with "reverence", the Church of England leader said.
"More and more (is) clearly required of us as we grow in awareness of how fragile is the balance of species and environments in the world and just how our greed distorts it.
"When we threaten the balance of things, we don't just put our material survival at risk; more profoundly we put our spiritual sensitivity at risk -- the possibility of being opened up to endless wonder by the world around us."
Image Above: Doctor Rowan Williams, the Archbishop of Canterbury,