We sometimes think that the inferior animals act foolishly, but are there any greater fools than mankind? Consider how so many, perhaps most, races . . . treat the traveller; what fears and prejudices has he to contend with. So many millions believing that he has to come [to] do them some harm. Let a traveller set out to go round the world, visiting every race, and he shall meet with such treatment at their hands that he will be obliged to pronounce them incorrigible fools. Even in Virginia a naturalist who was seen crawling through a meadow catching frogs, etc. was seized and carried before the authorities . . .