Warren Buffett and Carlos Slim are two of the richest people in the world. Both started investing at a young age, with Buffett buying stocks at age 11 and Slim opening a bank account and purchasing shares at age 12. While Buffett initially struggled in school after moving as a child, he later excelled in business school, earning an A+ in Benjamin Graham's class. Similarly, Slim taught college courses while completing his own undergraduate degree. A key characteristic they share is being greedy when others are fearful - Buffett bought struggling companies during downturns, while Slim seized opportunities in Mexico after its 1982 economic collapse. The main difference is their approach to charitable giving, with Buffett pledging most