Max Horkheimer (February 14, 1895 - July 7, 1973) was a German philosopher and sociologist, known especially as the founder and guiding thinker of the Frankfurt School of critical theory. He was born in Stuttgart and died in Nürnberg.
Horkheimer (front left) and Adorno (front right); Juergen Habermas in back, right. Heidelberg, 1965.