Letters 74.28

Sometimes virtue is widespread, governing kingdoms, cities, and provinces, creating laws, developing friendships, and regulating the duties that hold good between relatives and children; at other times it is limited by the narrow bounds of poverty, exile, or bereavement. But it is no smaller when it is reduced from prouder heights to a private station, from a royal palace to a humble dwelling, or when from a general and broad jurisdiction it is gathered into the narrow limits of a private house or a tiny corner.

Seneca, Letters to Lucilius 74.28, translated by Richard Mott Gummere