Nor is this Bible answer,--of which the book of Genesis gives us the one end, and this text of Isaiah the other,--a mere pious opinion, which the true history of man's dealing with wild beasts by extermination proves to be impracticable. We may take on scientific authority a few facts as hints from nature, that after all man is to blame for the wildness of the beasts, and that through his sanctification they may be restored to sympathy with himself. Charles Darwin says: "It deserves notice, that at an extremely ancient period, when man first entered any country the animals living there would have felt no instinctive or inherited fear of him, and would consequently have been tamed far more easily than at present." And he gives some very instructive facts in proof of this with regard to dogs, antelopes, manatees and hawks. "Quadrupeds and birds which have seldom been disturbed by man dread him no more than do our English birds the cows or horses grazing in the fields."[38] Darwin's details are peculiarly pathetic in their revelation of the brutes' utter trustfulness in man, before they get to know him. Persons, who have had to do with individual animals of a species that has never been thoroughly tamed, are aware that the difficulty of training them lies in convincing them of our sincerity and good-heartedness, and that when this is got over they will learn almost any trick or habit. The well-known lines of Burns to the field-mouse gather up the cause of all this in a fashion very similar to the Bible's. [38] Darwin, _Variation of Animals and Plants under Domestication_, pp. 20, 21. "I'm truly sorry man's dominion Has broken nature's social union, And justifies that ill opinion, Which makes thee startle At me, thy poor earth-born companion And fellow-mortal."