Which preposition to use with utopian

in Occurrences 1%

If half the talk on this subject were sincere, I should consider an attempt to keep up the connection with Great Britain as Utopian in the extreme.

than Occurrences 1%

As though anything could be more sentimental, more divorced from the sense of reality, than the principles which lead us to a condition of things like these; as though anything could be more wildly, burlesquely Utopian than the idea that efforts of the kind that the Italian people are now making, the energy they are now spending, could ever achieve anything of worth.

Which preposition to use with  utopian