If there's any illness for which people offer many remedies, you may be sure that particular illness is incurable, I think.
Anton Chekhov (2015). “Greatest Works of Anton Chekhov: Plays, Short Stories, Novel and A Biography (Including The Steppe, Ward No. 6, Uncle Vanya, The Cherry Orchard, Three Sisters, On Trial, The Darling, The Bet, Vanka, After the Theatre and many more)”, p.563, e-artnow
