Gibberish

SCP-058 'speaks' in a human voice, though no method of producing sound has been observed in its physiology. It speaks with vocal tone and accent of an elderly British male with a slight lisp and deep voice. SCP-058 talks constantly, regardless of conditions: even when attacking, SCP-058's voice and pace of speech are unchanged. The speech of SCP-058 lacks any detectable correlation to events, persons, or exterior locations involved with SCP-058 (see Transcript of Interview 058-04).

http://www.scpwiki.com/scp-058