This quote is essentially an endorsement of free market capitalism, suggesting that the best way to ensure freedom and general welfare is to let the market system operate without interference. In this context, the "market system" refers to an economic system wherein goods and services are produced, distributed, and exchanged by the forces of supply and demand.

The quote implies that any attempts to control or regulate the market system (for example, through government intervention) could potentially hinder freedom and welfare. This is because the market system, when left to its own devices, is seen as a self-regulating mechanism that naturally balances itself out. In theory, competition drives innovation, keeps prices in check, and ensures that resources are allocated efficiently.

Applying this quote to today’s world, it could be argued that countries with freer economies tend to have higher standards of living. For example, the economic freedom enjoyed in countries like Singapore, Hong Kong, and Switzerland has contributed to their prosperity. However, it’s also important to note that no country practices pure, unregulated capitalism. Even in the freest economies, the government still plays a role in enforcing property rights, maintaining the rule of law, and providing public goods and services.

In terms of personal development, this quote might suggest that individuals should have the freedom to make their own choices, and that these choices will ultimately lead to their welfare. For example, in a career context, this could mean having the freedom to choose what kind of work to do, who to work for, and how hard to work. The idea is that these choices, made freely, will lead to the best outcomes for the individual. However, just like in the economic context, this doesn’t mean that there is no role for guidance, mentorship, or other forms of support in helping individuals make these choices.