Chief executive and chairman of Corning, a 174-year-old American materials firm. A trained accountant, Weeks first went to Corning as an auditor working for PriceWaterhouseCoopers. Both his parents were alcoholics, and his father's plumbing business had gone bankrupt. Corning seemed like the kind of steady company he wanted to work at full-time—and 42 years later he is still there.
Before becoming chief executive in 2005, Weeks ran Corning's optical-communications business—the division whose dotcom-era boom and bust taught him the importance of humility. "If you catch a big trend," he has said, "you actually start to believe that you're really smart."
Weeks has sat on Amazon's board since 2016. He spends a significant share of his own time working with small teams of researchers, and colleagues recall him joining them at the whiteboard as they developed the first glass for the iPhone. He quotes Marcus Aurelius and Miyamoto Musashi, a 17th-century Japanese swordsman.
Ocean: A body of water occupying about two-thirds of a world made for man -- who has no gills.