In his poem "The Vagabond," Robert Louis Stevenson is praising the life of a vagabond -- of a person who lives on his own, travelling from place to place without a home, job, etcetera.
The first two lines of the stanza say that he will just take things as they come and deal with whatever happens.
The next two say that all he wants is the world around him and a road to follow -- a sense of adventure is what's being talked about here.
The next two emphasize his independence. He doesn't need friends or love or money. He can take care of himself.
And the last just repeat that all he needs is a road and nature.
So overall, this is saying that what he really craves is freedom and adventure and that security and relationships are not important.