A sanctuary may be defined as a place where Man is passive and the rest of
Nature active. Till quite recently Nature had her own sanctuaries, where man
either did not go at all or only as a tool-using animal in comparatively small
numbers. But now, in this machinery age, there is no place left where man
cannot go with overwhelming forces at his command. He can strangle to death
all the nobler wild life in the world to-day. To-morrow he certainly will have
done so, unless he exercises due foresight and self-control in the mean time.
There is not the slightest doubt that birds and mammals are now being killed
off much faster than they can breed. And it is always the largest and noblest
forms of life that suffer most. The whales and elephants, lions and eagles, go.
The rats and flies, and all mean parasites, remain. This is inevitable in certain
cases. But it is wanton killing off that I am speaking of to-night. Civilized man
begins by destroying the very forms of wild life he learns to appreciate most
when he becomes still more civilized. The obvious remedy is to begin
conservation at an earlier stage, when it is easier and better in every way, by
enforcing laws for close seasons, game preserves, the selective protection of
certain species, and sanctuaries.
I have just defined a sanctuary as a place where man is passive and the rest of
Nature active. But this general definition is too absolute for any special case.
The mere fact that man has to protect a sanctuary does away with his purely
passive attitude. Then, he can be beneficially active by destroying pests and
parasites, like bot-flies or mosquitoes, and by finding antidotes for diseases like the epidemic which periodically kills off the rabbits and thus starves many of
the carnivora to death. But, except in cases where experiment has proved his
intervention to be beneficial, the less he upsets the balance of Nature the
better, even when he tries to be an earthly Providence.