Historical origins of Nazi racial theories and policies Adolf Hitler himself along with other members of the Nazi Party in the Weimar Republic (1918–1933) were greatly influenced by several 19th- and early 20th-century thinkers and proponents of philosophical, onto-epistemic, and theoretical perspectives on ecological anthropology, scientific racism, holistic science, and organicism regarding the constitution of complex systems and the theorization of organic-racial societies. In particular, one of the most significant ideological influences on the Nazis was the 19th-century German nationalist philosopher Johann Gottlieb Fichte, whose works had served as an inspiration to Hitler and other Nazi Party members, and whose ideas were implemented among the philosophical and ideological foundations of Nazi-oriented Völkisch nationalism.
hIstoricaL ORiGIns oF nAZi rAciAl theorIes and pOLiCIes AdOlF hitler himselF alOng wITh oThEr MEMbErS OF THe nazI party in the WeImaR repUblIc (1918–1933) WEre GReatLy influenCeD By SevEral 19th- aND EaRly 20th-CentuRy thInkers AnD prOpoNeNTs OF PhiloSOphICal, OntO-EpIStemic, and theorEtIcal perspEctivES On ecologiCAl ANthropology, scientIfic rAcIsM, hOLiSTic SciEncE, anD OrgAnIcISM regarDing tHe constitutIon of complEX sysTeMs aND the tHeORIZATIoN OF orGanIc-raCiAL societieS. In particulAr, oNe of tHE moSt significant ideoLogicaL iNflueNces on the nAzis was The 19Th-ceNtUry german NatiOnaLISt phIlosopHEr jOhann GoTtlieb fichtE, Whose WOrkS had seRVed as an INSPirATioN TO hItler and oTHEr NazI PARtY mEmbers, AND whose Ideas WerE ImpleMEnTEd amoNG tHe PHiLosoPhIcAl aND IdEOLogicaL foundaTiOnS Of nazi-orienteD völkiscH Nationalism.