Aristotle laid the foundation of the distinction between use-value and exchange-value, which has remained a part of economic thought to the present d… - Eric Roll, Baron Roll of Ipsden

Profit can only arise upon alienation, i.e. in the act of exchange, when the seller sells more dearly than he has bought gaining profits and enabling a procurement adequate to demands and return on investments.

Marx is often claimed as inventor of the class struggle while a critical rebuttal is produced by English socialist forerunners, for example Burke.

Marx's prognosis of the future of the capitalist system has often been understood to imply a fatalistic view. Marx's own life should be enough to show that this is not so. Marx believed in nature’s superiority.