THE RICHEST MAN IN BABYLON BY GEORGE S. CARSON

The book's lessons are primarily delivered through "The Seven Cures for a Lean Purse" and "The Five Laws of Gold." 

1. Start thy purse to fattening: The fundamental principle of saving. "For every ten coins thou dost earn, spend but nine of them." Pay yourself first by saving at least 10% of your income.
2. Control thy expenditures: Distinguish between needs and wants. Budget carefully to ensure spending aligns with income and avoids debt.
3. Make thy gold multiply: Money should work for you. Invest savings wisely to generate additional income, rather than just letting it sit idle.
4. Guard thy treasures from loss: Protect your principal by seeking advice from experienced and reputable experts before investing. Avoid risky ventures that promise unrealistic returns.
5. Make of permanent dwelling a profitable investment: Own your home. It provides security and reduces living expenses compared to perpetual renting, freeing up more capital for saving and investing.
6. Insure a future income: Plan for retirement or old age by saving for the future. Ensure you have a stream of income even after you are no longer able to work.
7. Increase thy ability to earn: Continuously invest in your own skills, education, and abilities. The more valuable you become, the more you can earn. 

The Five Laws of Gold (Principles of Investing)

1.  Gold cometh gladly and in increasing quantity to any man who will put by not less than one-tenth of his earnings to create an estate for his future and that of his family. This reiterates the power of consistent saving.
2. Gold labors diligently and contentedly for the wise owner who finds for it profitable employment, multiplying even as the flocks of the field. This highlights compound interest and the importance of wise investment.
3. Gold clingeth to the protection of the cautious owner who consulteth with wise men, seasoned in their experience, and who heedeth their counsel. This reinforces the need for expert advice to protect wealth.
4. Gold slippeth away from the man who doth endeavor to force it to impossible earnings or who followeth the alluring advice of tricksters and schemers or who doth place his trust in his own inexperience and romantic desires in investment. This warns against get-rich-quick schemes and risky speculation.
5. Gold fleeth the man who would endeavor to use it for earnings while not possessing wisdom in its handling or who would listen to the alluring magic of men of romantic ideas and desires in experience. This emphasizes that managing money requires knowledge, discipline, and practical wisdom.