Democritus
Dēmókritos, meaning "chosen of the people" (c. 460 – c. 370 BC) Ancient Greek pre-Socratic philosopher from Abdera, primarily remembered today for his formulation of an atomic theory of the universe.
The happiness or unhappiness of a man does not depend upon the amount of property or gold he owns. Happiness or misery is in one’s soul. A wise man feels at home in every country. The whole universe is the home of a noble soul.