what is clifford theory regarding travel

Both travelers find the train a terrifying novelty, but approach this new experience in different manners. Clifford draws energy from the rush of new experience, while Hepzibah approaches their flight tentatively, more aware that they are obsolete. Clifford, talking to an old man, says that men find themselves returning to the ideal of living outside of their defined Œhomes.' He says that the greatest possible stumbling block in the path of human happiness is the idea of a home as heaps of brick and stone.When the two leave the train, they are physically and metaphorically isolated, alone in an empty, abandoned town.