Konstantin Stanislavsky (1863-1938) was a director who decisively influenced how theatre and opera is presented. He is remembered today outside Russia as the man who said if you see a gun in the first act it will go off in the third.
And that’s about it.
Few theatre professionals would recognise his face, let alone the sound of his voice.
In this 1981 Soviet video, we see rare film of Stanislavsky discussing his method (at 2’15” to 4’32”) and rehearsing “Tartuffe”.