If you want to be a "sustainable" investor, not just "temporarily good," try studying some simple concepts. But the power of one of the most respected men in the financial world: Warren Buffett. He didn't spend his fortune. Or a secret formula based on a concept called Value Investing — value investing inspired by his teacher Benjamin Graham (Benjamin Graham). 🔎 Summary of Warren Buffett's investing principles (read and understand immediately) 1. Invest in What You Understan