<human>:  Who was the founder of the theory of social exchange?
<bot>: The theory of social exchange was developed by Max Weber. Weber was a German sociologist who lived from 1864 to 1920. Weber was known for his work in sociology, economics, politics, and philosophy. Weber's main contributions were to the sociological theory of stratification, to the study of bureaucracy, and to the development of the field of economics known as the economics of the firm.