"The employment of mathematical symbols is perfectly natural when the relations between magnitudes are under discussio…"

"Anyone who understands algebraic notation, reads at a glance in an equation results reached arithmetically only with …"

"In the act of exchange, as in the transmission of power by machinery, there is friction to be overcome, losses which …"

"So far we have studies how, for each commodity by itself, the law of demand in connection with the conditions of prod…"

"There are many anticipators of marginal analysis. Three major names were Augustin Cournot (1801-1877), J. H. von Thün…"

"It took from a hundred to a hundred and fifty or two hundred years for the astronomy of Kepler to become the astronom…"

"Faith makes us live by showing us that life, although it is dependent upon reason, has its well spring and source of …"

"In 1823 he took a license degree in mathematics at Sorbonne University. He then became the private secretary of a fie…"

"Les hommes font les lois. Les femmes font les mœurs."

"The standing armies, while a burden on the people, are inadequate for the achievement of great and decisive results i…"