Core Viewpoint - The article emphasizes the importance of viewing stock investments as business investments, highlighting that market fluctuations should not deter long-term investors like Warren Buffett, who focuses on the underlying value and productivity of the assets rather than short-term price movements [2][11]. Investment Stories - Story One: Buffett's investment in a farm in Nebraska illustrates that despite significant market fluctuations, the farm's value and profitability increased over time, demonstrating a return of three times the initial investment and a value increase of five times or more [4][5]. - Story Two: Buffett's investment in a retail property near New York University showcases how strategic investments can yield substantial returns, with dividends exceeding 35% of the initial investment and total distributions surpassing 150% of the original amount [7][8]. Fundamental Investment Principles - Buffett's experiences underline that satisfactory investment returns do not require expert knowledge, but investors must recognize their limitations and follow a reasonable investment path [11]. - The focus should be on the future productivity of the assets; if estimating future earnings is challenging, it is advisable to move on to other opportunities [11]. - Market fluctuations should be viewed as opportunities for identifying mispriced assets, and investors should not be swayed by market noise but rather focus on the underlying profitability of the companies [11].