Invented the printing press. Borrowed money from the lawyer Fust, who then sued after not receiving interest on his loan in time - Gutenberg had to hand over the invention to Fust and died poor.

A Roman emperor who was also a philosopher. The last of what historians call the Five Good Emperors, a string of competent rulers. He wrote a diary full of self-exhortations, confessions, and reminders to act like a good person, which can be an interesting read from such a privileged autocrat. My highlights: Book: Meditations.