Erdös was a Hungarian mathematician. Erdős published more papers than any other mathematician in history, working with hundreds of collaborators. He is also known for his eccentric personality.
Possessions meant little to Erdős; most of his belongings would fit in a suitcase, as dictated by his itinerant lifestyle. Awards and other earnings were generally donated to people in need and various worthy causes. He spent most of his life as a vagabond, traveling between scientific conferences and the homes of colleagues all over the world. He would typically show up at a colleague’s doorstep and announce “my brain is open,” staying long enough to collaborate on a few papers before moving on a few days later.