Asked how to measure success, the 90-year-old Buffett gave what he called the ultimate answer. He'd known plenty of people who got very rich — their lives were not successes. He'd known people who were very famous — not successes either. But he had never met a single person who, at 65 or 70, had the genuine love of their children, spouse, and coworkers and felt like a failure. Conversely, he'd seen loads of people with more talent, money, and fame who lacked that love, and for them, everything felt hollow.