# Self-interest

## Definition

The motivation of individuals to pursue their own advantage in economic
transactions. Smith argues that in civilised society, individuals obtain the
co-operation of others not through appeals to benevolence but by engaging
their self-love — showing them that it is to their own advantage to provide
what is desired. Self-interest is the engine that makes exchange function:
each party to a bargain acts from regard to their own benefit.

## Source Chapter

Book I, Chapter 2: "Of the Principle which gives Occasion to the Division
of Labour"

## Context

Smith introduces self-interest through the celebrated passage about the
butcher, brewer, and baker. He contrasts it with benevolence, arguing that
we cannot rely on the goodwill of others for our daily needs in a society
of many, and that self-interest provides a more reliable and universal basis
for economic co-operation.

## Economic Domain

General Theory

## Smith's Original Wording

"It is not from the benevolence of the butcher, the brewer, or the baker that
we expect our dinner, but from their regard to their own interest. We address
ourselves, not to their humanity, but to their self-love, and never talk to
them of our own necessities, but of their advantages."
