Linus Torvalds

Finnish American software engineer, who was the principal force behind the development of the Linux kernel that became the most popular kernel for operating systems. He also created the revision control system Git as well as the diving log software Subsurface.

About Happiness

Also about
Optimism

I actually think that I'm a rather optimistic and happy person; it's just that I'm not a very positive person, if you see the difference.