[1] Marek Siemek was a disciple of Bronisław Baczko, one of the main representatives of the Warsaw School of the History of Ideas.

In his early works Siemek interprets marxism as a form of transcendental philosophy.

In his later works ha abandons Marxism for hegelianism interpreted as transcendental social philosophy.

[2] On 10 February 2006 he received doctorate honoris causa of the University of Bonn.

Marek Siemek had one son, currently residing in the United States.