Before considering the question further, let us note yet another way in which the physical environment affects men’s minds and has been supposed directly to induce certain racial qualities. Buckle pointed out with great force the influence on the mind of what he called the external aspects of nature. He showed that where, as in India and the greater part of Asia, the physical features of a country are planned upon a very large scale; where the mountains are huge, where rivers are of immense length and volume, where plains are of boundless extent, and the sun very hot, there the forces of nature are exerted with an intensity that renders futile the best efforts of man, at any rate of man in a state of low civilisation, to cope with them. In such countries men are exposed to calamities on an enormous scale, great floods, violent storms and deluges of rain, earthquakes, excessive droughts resulting in famine and plague; and they are exposed to the attacks of many dangerous animal species, which are bred by the great heat in the dense and unconquerable forests. These disasters have repeatedly occurred on a scale such that in comparison with them the recent earthquake in California appears a mere trifle. Millions have been destroyed in a few hours in some of the floods of the Yellow River of China. The magnitude of these objects and the appalling and irresistible character of such devastating forces produce, said Buckle, two principal and closely allied effects upon the mind; they stimulate the imagination to run riot in extravagant and grotesque fancies; at the same time, they discourage any attempt to cope with these great forces and to understand their laws, and thus keep men perpetually in fearful uncertainty as to their fate; for they cannot hope to control it by their own unaided efforts.