• What are your fees?" inquired Guyal cautiously. "I respond to three questions," stated the augur. "For twenty terces I phrase the answer in clear and actionable language; for ten I use the language of cant, which occasionally admits of ambiguity; for five, I speak a parable which you must interpret as you will; and for one terce, I babble in an unknown tongue.

    Jack Vance (2000). “Mazirian the Magician: (previously titled The Dying Earth)”, p.91, Macmillan