Medicine is my lawful wife and literature is my mistress. When I get tired of one I spend the night with the other.[Медицина – моя законная жена, а литература – любовница. Когда надоедает одна, я ночую у другой.]
Source:Letter to Aleksei Sergeyevich Suvorin (September 11, 1888), Letters of Anton Chekhov (The Macmillan Company, ed. 1920), Page 99