Every once in a while, legendary businessman Warren Buffett dishes out a few morsels of advice to illustrate the core investment — and life — principles that helped him achieve success.
In a 1994 commencement speech at the University of Southern California, Berkshire Hathaway vice chairman Charlie Munger revealed one lesson, called the “20-slot” rule, that he says that Buffett loves to teach when lecturing at business schools.
