He famously distinguished  between sensate cultures that were based on empirical science, and ideational  cultures based on mysticism.
In Altruistic Love, he wrote that  the study of altruistic love was needed to avert worldwide chaos. He famously distinguished  between sensate cultures that were based on empirical science, and ideational  cultures based on mysticism. A member of the Kerensky government, he was forced to emigrate after he was sentenced to death by the Bolsheviks, which he wrote about in his autobiography Leaves from a Russian Diary. Following this, he taught at the University of Minnesota until 1930, when he took up his most famous position. FTP, identify this sociologist and author of Social and Cultural Dynamics best known for founding Harvard's sociology department.
In Altruistic Love, he wrote that  the study of altruistic love was needed to avert worldwide chaos.
Pitirim Sorokin