The poorer is a family, the greater is the proportion of the total outgo which must be used for food... The proportion… — Ernst Engel Being equal Copy Share Image
He who attempts to draw any conclusion whatever as to the nation's wealth or poverty from the mere fact of a favorable… — Ernst Engel Balance Copy Share Image
With rising incomes, the share of expenditures for food products declines. The resulting shift in expenditures affects demand patterns and employment structures. — Ernst Engel Decline Copy Share Image