Alfred Marshall

"Natural resources must be managed wisely for future generations."

"The growth of cities reflects the expansion of trade and commerce."

"Price discrimination reflects differences in consumer willingness to pay."

"The entrepreneur is the driving force of economic progress."

"Voluntary exchange creates value for both parties involved."

"The concentration of economic power threatens political freedom."

"International trade promotes peace through mutual economic interest."

"The study of economics illuminates the choices that shape our world."

"Prosperity depends on the security of property rights and contracts."

"The invisible hand of self-interest serves the public good."

"Factory work transforms both the character and condition of the working class."

"The growth of knowledge multiplies the productive power of labor."

"Consumption is the end purpose of all economic activity."

"The social order rests on the foundation of economic justice."

"Competition among businesses benefits consumers through lower prices and better quality."

"The worth of a thing to the possessor is its value in use."

"Economic hardship often spurs innovation and adaptation."

"The standard of living rises with the advance of productive technology."

"Credit and trust are the lifeblood of commerce."

"The division of labor increases both quantity and quality of production."

"Economic laws are as certain as the laws of nature."

"Savings represent sacrifice for future consumption."

"The market economy harnesses self-interest for the common benefit."

"Specialization increases efficiency and enables greater prosperity."

"The demand for labor depends on the demand for goods."

"Economic development requires both capital and cultural change."

"The distribution of income reflects the distribution of productive power."

"Transportation improvements expand markets and promote commerce."

"Consumer sovereignty drives producers to serve the public interest."

"The accumulation of knowledge is the foundation of civilization."