What according to Adam smith is the best way to promote?

According to Adam Smith, the best way to promote economic prosperity and societal welfare is through the principle of the "invisible hand." This concept suggests that when individuals pursue their own self-interest in a competitive marketplace, they inadvertently contribute to the overall good of society. By allowing free markets to operate without excessive government intervention, resources are allocated efficiently, leading to innovation and growth. Thus, Smith advocates for a system where personal ambition aligns with the public interest.