EntityQ947456· pop 20· linked from 320 articlesSidney HookSign in to saveAmerican philosopher (1902–1989)ConnectionshumanismEntitysocial democracyEntitypolitical philosophyEntitysecular humanismEntityAmerican philosophyEntityRussiaCountryGermanyCountryAustriaCountryMoscowCityNew York CityCityAlbert EinsteinPersonKarl MarxEntityRonald ReaganPersonVladimir LeninEntityNelson MandelaEntityAbraham LincolnPersonWorld War IIConceptCaliforniaEntityJoseph StalinPersonSoviet UnionConceptCategories1902 births1989 deaths20th-century American historians20th-century American Jews20th-century American male writers20th-century American philosophersActivists from New York (state)American agnosticsAmerican anti-communistsAmerican male non-fiction writersAmerican MarxistsAmerican people of Austrian-Jewish descent