Benjamin Graham, the guru of Warren Buffet, in this book has clearly insisted on value investment which effectively means, investing in companies by considering it as an investment into their own business. in this way, a thorough understanding of the company will also be done and the stock price will move up in line with the growth of the company.
he also stated that normally a company’s stock grows in three ways- actual growth of the company, inflation of the economy and speculative growth(or de growth) in the eyes of the investor.