Light Without Heat (Russian: Светит, да не греет, romanized: Svetit, da ne greyet) is a five-act play by Alexander Ostrovsky, based upon the play The Broken Happiness by his friend, a fellow dramatist , which Ostrovsky re-worked. It premiered at the Moscow Maly Theatre on 6 November 1880 (as a benefit for Mikhail Sadovsky who played Rabachev) and first appeared in print in 1881, in Ogonyok magazines (issues 6-10), as the Ostrovsky and Solovyov's joint work.