Read it through once

Well, he is not a ghost; yet every nerve I have is unstrung: for a moment I am beyond my own mastery. What does it mean? I did not think I should tremble in this way when I saw him, or lose my voice or the power of motion in his presence. I will go back as soon as I can stir: I need not make an absolute fool of myself. I know another way to the house. It does not signify if I knew twenty ways; for he has seen me.