μὴ δὶς πρὸς τὸν αὐτὸν λίθον πταίειν → do not stumble twice on the same stone
impŭtātor: (inp-), ōris, m. id.,I a reckoner (post-Aug.); trop.: beneficii, one who reckons his benefits highly, thinks much of them, Sen. Ben. 2, 17, 6.