I have heard he knows what he has seen operating in us (particularly those that are sins). I don´t think he knows my mind, though he might have develope his schemes, largely, in humanity, since the beginnig: He knew we wanted to be "like" God, and selfwilled.
Of course, he knows his ways, as well as his demons. I raterh like to pray mentaly, to avoid my ideas or thought be "taken" in the air. Dan 9:21 And I was still speaking in prayer, and the man Gabriel, whom I had seen in the vision previously, in my weariness touched me at the time of the evening offering. Dan 9:22 And he instructed me and he spoke with me and he said, "Daniel I have now come out to teach you understanding.
Dan 9:23 At the beginning of your pleas for mercy, a word went out, and now I have come to declare it, for you are highly esteemed, and so consider the word and understand the vision.
Dan 10:12 Then he said to me, "Fear not, Daniel, for from the first day that you set your heart to understand and humbled yourself before your God, your words have been heard, and I have come because of your words.
Eph 2:2 in which you once walked, following the course of this world, following the prince of the power of the air, the spirit that is now at work in the sons of disobedience—