" The association of the wild and the wood also run deep in etymology. The two words are thought to have grown out of the root word wald and the old Teutonic word walthus, meaning 'forest.' Walthus entered Old English in its variant forms of 'weald,' 'wald,' and 'wold,' which were used to designate both 'a wild place' and 'a wooded place,' in which wild creatures -- wolves, foxes, bears -- survived. The wild and wood also graft together in the Latin word silva, which means 'forest,' and from which emerged the idea of 'savage,' with its connotations of fertility.... "

― Robert Macfarlane , The Wild Places