In 1910 Kádár undertook journeys to both centres of contemporary art, Paris and Berlin. He also visited Moscow in 1912, where he met Filippo Marinetti, Futurism's leading poet and polemicist. His many travels made him aware of Cubism, Constructivism, Suprematism and Expressionism, all of which he put to his own personal use. With the rise of Nazism, being Jewish, he chose to return to Hungary and after 1945 consecutive regimes considered his work too radical and decadent to be shown. Despite the repression of his work and his increasingly blindness Kádár carried on painting until his death at the age of 79.