This quote essentially points to the inherent uncertainty and risk involved in capitalist ventures. In a capitalist system, income and wealth are not guaranteed or secured, but are contingent on a variety of factors such as market demand, competition, and individual performance. This means that under capitalism, one’s financial status is always subject to change and is never completely secure.

The first part of the quote, "there is no secure income," refers to the fact that in a capitalist society, one’s income is not guaranteed. It fluctuates based on factors such as job performance, market conditions, and economic trends. For instance, a business owner’s income could drastically decrease if a new competitor enters the market or if there is a downturn in the economy.

The second part, "no security of wealth," suggests that even if one has accumulated wealth, there is no guarantee that this wealth will remain secure. Investments can go bad, markets can crash, and businesses can fail. Therefore, under capitalism, wealth can be as volatile as income.

Applying this idea to today’s world, we can see that economic uncertainties, such as the recent COVID-19 pandemic, can drastically affect businesses and individuals. Many businesses, even established ones, have gone bankrupt, and individuals have lost jobs, demonstrating the lack of income and wealth security in capitalism.

In terms of personal development, this quote can be seen as a reminder of the importance of financial planning and risk management. It highlights the need for strategies such as diversifying income streams, investing wisely, and building an emergency fund to navigate the uncertainties of capitalism. Moreover, it also emphasizes the importance of adaptability and resilience, as success in a capitalist system often requires the ability to respond effectively to changing circumstances.