The Brick Moon and Other Stories

I cannot well tell you how much dismay this sight of a footprint in the ground gave me, nor how many sleepless nights it cost me. All the time I was trying to make my mother think that there was no ground for anxiety, and yet all the time I was showing her that I was very anxious. The more I pretended that I was not troubled, the more absent-minded, and so the more troubled, I appeared to her.