He himself writes in his introduction: "I confess that 25 years ago, a topic like elemental beings only elicited a tired, arrogant smile from me. When my sister wanted me to feel a spirit, a dwarf, I could only roll my eyes. Although only internally, as I didn't want to hurt her, I couldn't take the matter seriously. Today, 25 years later, I look back on experiences that would not only make a rationalist roll their eyes: cameras that only fail to work in certain places, creaking and banging in the house, a clap that wakes you up—these are still events that can be quickly rationalized away. Clear touches, the feeling of something sitting on your shoulder, and similar experiences would likely be dismissed as hallucinations. Yet one of my most profound experiences was...".