He changed the world and never asked for fame or riches (or even credit)!

"Ritchie has shaped our world in much more fundamental ways than Steve Jobs or Bill Gates have. What sets him apart from them is that he did it all not in a quest for wealth or fame, but just out of intellectual curiosity. Unix and C were the product of pure research—research that started as a side-project using equipment bought based on a promise that Ritchie and Thompson would develop a word processor."