Which preposition to use with pessimistic

in Occurrences 3%

There is nothing Oriental, nothing doubtful, nothing pessimistic in the whole range of his poetry.

about Occurrences 2%

"Because she is even more pessimistic about the results of to-day's work than yourself, Mr. Morris, and has shut herself up in Paris, refusing to be present at the opening of the States-General even as a spectator.

as Occurrences 2%

"As pessimistic as ever, my dear sir!" retorted Mr. Jefferson, somewhat testily.

Which preposition to use with  pessimistic