Which preposition to use with unintelligent

as Occurrences 1%

To set them all down to popular government is as narrow, as confused, and as unintelligent as the imputation in a papal Encyclical of all modern ills to Liberalism.

than Occurrences 1%

He had the face of a man with a fixed idea, and looked more obstinate, more unintelligent than ever.

Which preposition to use with  unintelligent