It was one of those strange moments that came to him rarely, but never left. A moment that stamped itself on heart and brain, instantly recallable in every detail, for all of his life. There was no telling what made these moments different from any other, though he knew them when they came. He had seen sights more gruesome and more beautiful by far, and been left with no more than a fleeting muddle of their memory. But these-- the still moments, as he called them to himself-- they came with no warning, to print a random image of the most common things inside his brain, indelible.
The protagonist experiences rare and unforgettable moments that leave a lasting imprint on his memory. Unlike ordinary experiences, these moments are distinct and vivid, allowing him to recall them in intricate detail throughout his life. Even amidst more intense experiences, whether beautiful or horrific, he finds that they do not stick in his mind as strongly as these unique instances.
He refers to these profound experiences as "still moments," as they abruptly surface without any preamble. They capture the essence of everyday occurrences, etching them indelibly into his thoughts, highlighting their significance in contrast to the fleeting nature of typical memories.