Can a market theory from 150 years ago still be valid? Samuel Benner, a 19th-century American farmer, proved it can. His analysis of price cycles identified recurrent patterns in markets: when sharp declines arrived, when it was time to accumulate positions, and when it was wise to take profits. What is remarkable is that his methodology has maintained surprising accuracy across the decades. Samuel Benner did not invent a magic formula, but rather documented the cyclical behavior of financial markets, a pattern that continues to repeat today. From historical panics to recent bull cycles, his work demonstrates that markets are not random: they respond to predictable patterns that every investor should understand.