654. As we can see, the day and night of the 24-hour cycle are thus completely swallowed up by the year cycle, with one "day" here in the polar region representing about six months and one "night" the same. As the whole of terrestrial human beings' mental expression is based on the "seasons" of a normal 24-hour cycle, it will therefore be in an unfavourable position here in the polar region where there is no "daytime" in winter and no "night-time" in summer. But it is not only the fact that there is no sunlight in winter that makes it difficult for the terrestrial human being to live here. As the Earth also has to obtain warmth from the sun and this is totally excluded from the polar regions for six months of the year and is very low in the sky during the other six months, even though it does shine unceasingly, it is obvious that the icy cold from outer space has an overwhelming effect here; indeed, it turns the polar regions into frozen wastes and thus removes all natural living conditions for terrestrial human existence, or in short, for all animal and plant life in these regions.