Gary S. Becker book A Treatise on the Family
Source: A Treatise on the Family, 1981, p. 79
Gary Stanley Becker was an American economist. He was a professor of economics and sociology at the University of Chicago. Described as “the most important social scientist in the past 50 years” by The New York Times, Becker was awarded the Nobel Memorial Prize in Economic Sciences in 1992 and received the United States Presidential Medal of Freedom in 2007. A 2011 survey of economics professors named Becker their favorite living economist over the age of 60, followed by Ken Arrow and Robert Solow.
Becker was one of the first economists to branch into what were traditionally considered topics belonging to sociology, including racial discrimination, crime, family organization, and drug addiction . He was known for arguing that many different types of human behavior can be seen as rational and utility maximizing. His approach included altruistic behavior of human behavior by defining individuals' utility appropriately. He was also among the foremost exponents of the study of human capital. Becker was also credited with the "rotten kid theorem."

Gary S. Becker book A Treatise on the Family
Source: A Treatise on the Family, 1981, p. 79
Gary S. Becker book A Treatise on the Family
Source: A Treatise on the Family, 1981, p. 39
Gary S. Becker book A Treatise on the Family
Book abstract 2009
A Treatise on the Family, 1981
Gary Becker (1991). "Milton Friedman." In: Edward Shils, ed. Remembering the University of Chicago: Teachers, Scientists and Scholars. Chicago: University of Chicago Press, pp. 140-6
Gary S. Becker book A Treatise on the Family
Source: A Treatise on the Family, 1981, p. 39
"The Age of Human Capital", in Edward P. Lazear, Education in the Twenty-First Century (2002)
Gary S. Becker book A Treatise on the Family
Source: A Treatise on the Family, 1981, p. 85
Why We Support a Revenue-Neutral Carbon Tax: Coupled with the elimination of costly energy subsidies, it would encourage competition. http://www.wsj.com/articles/SB10001424127887323611604578396401965799658 "Commentary" article in the Wall Street Journal, co-authored with George P. Shultz, dated April 7, 2013.