The classical liberal ideology emerged as a result of the Enlightenment period, which brought about new philosophies, challenging the existing assumptions about the nature of humankind and society. Modern liberalism developed around 1870 as a result of both philosophical and practical changes, including mass industrialisation. Classical liberals argue that modern liberalism has broken the principles of doctrines central to liberal thought whilst modern liberals claim that they are simply adapting and building on classical liberalist ideas. This essay will discuss the extent to which modern liberalism departs from classical liberalisms by analysing approaches to the size of the state, democracy and the concept of freedom and aims to justify the argument that modern liberalism departs considerably from classical liberalism. Modern liberalism departs from the ideas of classical liberalism with regards to the concept of freedom, although the extent of difference is limited. Isiah Berlin first discussed the concept of freedom in an essay published in 1958. Berlin proposed two concepts of liberty; positive, which is supported by modern liberalists, and negative, which is supported by classical liberals.
The classical conception of negative liberty suggests that society is best when there is an absence of external restrictions or constraints on the individual. Therefore, classical liberals strongly supported full individual freedom. John Stuart Mill, a political philosopher known as the ‘father of classical liberalism’ argued that the government is controlling the actions of individuals for no reason. He therefore developed a theory of ‘true freedom’ based on the complete absence of constraint and therefore he supports Berlin’s concept of negative liberty. Further classical liberals who argued for the theory of negative liberty include John Locke and Jeremy Bentham.