One of the chief reasons for the widespread fear of the Huns rested on their ability to travel very long distances in relatively short periods. This ability may well have been based on their use of horseshoes.

The failure of Christianity in the areas west from Sicily was even greater, and was increased by the spread of Arab outlooks and influence to that area, and especially to Spain.

Western civilization presents one of the most difficult tasks for historical analysis, because it is not yet finished, because we are a part of it and lack perspective, and because it presents considerable variation from our pattern of historical change.

The basis of social relationships is reciprocity: if you cooperate with others, others will cooperate with you.

The social sciences are usually concerned with groups of persons rather than individual persons. The behavior of individuals, being free, is unpredictable.

The hope for the twentieth century rests on recognition that war and depression are man-made, and needless. They can be avoided in the future by turning from the nineteenth-century characteristics just mentioned (materialism, selfishness, false values, hypocrisy, and secret vices) and going back to other characteristics that our Western Society has always regarded as virtues: generosity, compassion, cooperation, rationality, and foresight, and finding a increased role in human life for love, spirituality, charity, and self discipline.

The backwardness of our religious and social developments is undoubtedly holding back the development of the intellectual and political levels.