The Vollistan racial language is known as Volspak. It's a combination of spoken, multisyllabic, vowel heavy words and changes in the colour and motion of the aura, with the occasional touch of telepathy thrown in for clarification or emphasis if necessary. Because it depends so heavily on the use of the aura, non-Vollistans can never be truly proficient in the nuances of this language, although some have been known to become quite good.