I am convinced that he would not remain in either place, because he is possessed by an extraordinary terror of this person who ordered him to keep out of the way; in his ignorance, he believes this person to be everywhere, and cognizant of everything.
There are no more uses of "cognizant" in the book.
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Those who dream by day are cognizant of many things which escape those who dream only by night.
Edgar Allan Poe
I was also cognizant of how good it felt to actually be able to say what I thought to someone.