Simply put, if you are investing in stocks, there are three things that must be addressed: when to buy, how much to buy, and when to sell. Due to Van Tharp's emphasis on the psychology of investment and risk management in trading systems, he places greater stress on "how much to buy" and "when to sell," while being more lenient about "when to buy." As a result, a variety of systems pursuing different "optimal buying points" have their merits in his view. Therefore, in *The Way to Freedom*, he is able to provide readers with a comprehensive introduction to various trading philosophies.