Isaiah Berlin

Sir Isaiah Berlin (6 June 1909 – 5 November 1997) was a Russian-British social and political theorist, philosopher and historian of ideas. Although averse to writing, his improvised lectures and talks were recorded and transcribed, with his spoken word being converted by his secretaries into his published essays and books.

**Source**: Isaiah Berlin on Wikipedia.

• Karl Marx

  
  Karl Marx 1939
• The hedgehog and the fox

  
  The hedgehog and the fox 1970
• Four Essays on Liberty
  Four Essays on Liberty 1988