Summary
This quote suggests that the motivation for taking action or making decisions is rooted in two fundamental aspects of human nature: moral sense and self-interest. The moral sense component refers to one's principles or values, suggesting that individuals are driven to do what they believe is right or just. On the other hand, self-interest acknowledges that people are also influenced by their own personal well-being and desires. Together, these elements combine to shape an individual's will or drive to act in particular ways.