καπνιστέον
From LSJ
μόνον τὸ καλὸν ἀγαθὸν εἶναι → only the beautiful is the good, only the morally beautiful is good
English (LSJ)
A one must smoke, 'gas', τοὺς ἐν τοῖς μετάλλοις ὄντας Ph.Bel.99.18.
Greek (Liddell-Scott)
καπνιστέον: ῥημ. ἐπίθ. τοῦ καπνίζω, δεῖ καπνίζειν, Φίλων Μαθ. σ. 99.