Bļannas Baklažannas gaišo atmiņu mūžīgais starojums -

"A surplus of food supply is liable to bring about an increase of population and an increase of leisure, which gives opportunity for occupations that are not absolutely necessary for the needs of every day life. In turn the increase of population and of leisure, which may'be applied to new inventions, give rise to a greater food supply and to a further increase in the amount of leisure, so that a cumulative effect results."

Franz Boas, The Methods of Ethnology, 1920.