Hospitality refers to the relationship between a guest and a host, wherein the host receives the guest with goodwill, including the reception and entertainment of guests, visitors, or strangers. Louis, chevalier de Jaucourt describes hospitality in the Encyclopédie as the virtue of a great soul that cares for the whole universe through the ties of humanity.
Hospitality ethics is a discipline that studies this usage of hospitality.
Derives from the Latin hospes, meaning "host", "guest", or "stranger". Hospes is formed from hostis, which means "stranger" or "enemy" (the latter being where terms like "hostile" derive). By metonymy the Latin word 'Hospital' means a guest-chamber, guest's lodging, an inn. Hospes is thus the root for the English words (where the p was dropped for convenience of pronunciation), hospitality, hospice, hostel and hotel.
In ancient cultures hospitality involved welcoming the stranger and offering him food, shelter, and safety.
In Ancient Greece, hospitality was right, with the host being expected to make sure the needs of his guests were met. The ancient Greek term xenia, or theoxenia when a god was involved, expressed this ritualized guest-friendship relation. In Greek society a person's ability to abide by the laws of hospitality determined nobility and social standing. The Stoics regarded hospitality as a duty inspired by Zeus himself.
In India hospitality is based on the principle Atithi Devo Bhava, meaning "the guest is God". This principle is shown in a number of stories where a guest is revealed to be a god who rewards the provider of hospitality. From this stems the Indian practice of graciousness towards guests at home and in all social situations.
Judaism praises hospitality to strangers and guests based largely on the examples of Abraham and Lot in the Book of Genesis (Genesis 18:1–8 and 19:1–8). In Hebrew, the practice is called hachnasat orchim, or "welcoming guests". Besides other expectations, hosts are expected to provide nourishment, comfort, and entertainment for their guests, and at the end of the visit, hosts customarily escort their guests out of their home, wishing them a safe journey.