Philip Fisher was an influential American investor and author, known for his contributions to the field of value investing. He is best recognized for his book, *Common Stocks and Uncommon Profits*, published in 1958, which outlines his investment philosophy and strategies. Fisher emphasized the importance of thorough research and understanding a company's management and competitive position before investing. Fisher's investment approach focused on long-term growth and the quality of companies rather than short-term market fluctuations. He is often associated with the growth investing style and has influenced many successful investors, including Warren Buffett, who has cited Fisher's work as a significant inspiration in his own investment strategies.