...The final programme focusses on the concepts of positive and negative liberty introduced in the 1950s by Isaiah Berlin. Curtis briefly explains how negative liberty could be defined as freedom from coercion and positive liberty as the opportunity to strive to fulfill one's potential. Tony Blair had read Berlin's essays on the topic and wrote to him[5] in the late 1990s, arguing that positive and negative liberty could be mutually compatible. He never received a reply, as Berlin was on his death bed.
The programme begins with a description of the Two Concepts of Liberty, reviewing Berlin's opinion that, since it lacked coercion, negative liberty was the 'safer' of the two. Curtis then explains how many political groups who sought their vision of freedom ended up using violence to achieve it...