1899-1959 190 1941- 20thcentury act(philosophy) agent(philosophy) alfred ancient audi biophysics biothermodynamics causation cognitionandculture congresses culture ethics freewillanddeterminism history intersubjectivity knowledge modern personality phenomenologicalsociology philosophy possibility praxeology psychology robert schutz self-helptechniques socialinteraction success symbolism(psychology) theoryof thermodynamics to1500 unifiedfieldtheories