The Demon

The Demon from 1904 is among Weiss's most explicitly Symbolist works, depicting a demonic figure in the tradition of Eastern European Romantic and Symbolist engagement with supernatural forces. The demon as subject had particular resonance in Polish and Russian Symbolism — Mikhail Vrubel's great Demon paintings were widely discussed in Kraków artistic circles — and Weiss's version draws on this tradition while inflecting it through his own psychologically intense figure style. The National Museum in Kraków holds this as a major statement of Polish Symbolist painting from the peak of the Young Poland movement's ambition and influence.

Weiss deploys his most expressively charged brushwork in The Demon, with the figure painted in urgent, heavily loaded strokes that convey supernatural force rather than naturalistic description. The dark, turbulent background merges with the figure in a manner that recalls Carrière's atmospheric dissolution but with greater violence of touch.