निम्नलिखित राजनीतिक विचारकों में से कौन 'संस्थापित संप्रभुता' (instituted sovereignty) और 'अर्जित संप्रभुता' (acquired sovereignty) के बीच अंतर करता है?

Who said: 'The main laboratory for the actual working of political institutions is not a library, but the outside world of public life'?

Who among the following scholars criticized J. S. Mill by stating that 'we cannot separate two different compartments of individual conduct'?