once and again

" The extinction of many ancient species may be due to humans rather than climate change, experts say.
For many years, scientists have been arguing about the causes of widespread extinctions of vast numbers of species at the end of the last Ice Age.
The researchers concluded that these species were driven to extinction by hunting.
"It is sad to know that our ancestors played such a major role in the extinction of these species - and sadder still when we consider that this trend continues today," he said. "

Who was that who said - the scientist struggles and sweats and almost gives up but finaly gets to the top of the last cliff at the top of the mountain and pulls himself over the edge and while he is laying there gasping for breath he sees

a priest who has been sitting there ...

Don't know about the hunting part of it but religion has been saying for some time now that a whole lot of the troubles of the world is the fault of people, including the disappearance of lots of animals.