Full Idea
Even democracy, when it becomes fanatical, as it did …in the French Revolution, ceases to be Liberal. Indeed, a fanatical belief in democracy makes democratic institutions impossible.
Gist of Idea
Democratic institutions become impossible in a fanatical democracy
Source
Bertrand Russell (Philosophy and Politics [1950], p.26)
Book Reference
Russell,Bertrand: 'Unpopular Essays' [Unwin 1990], p.26
A Reaction
Presumably this is because the supposed 'will of the people' is continually placed in opposition to the institutions. For example, there is a problem if a referendum is held, which produces a result in conflict with the institutions.