"There was a smell of Time in the air tonight. He smiled and turned the fancy in his mind. There was a thought. What did time smell like? Like dust and clocks and people. And if you wondered what Time sounded like it sounded like water running in a dark cave and voices crying and dirt dropping down upon hollow box lids, and rain. And, going further, what did Time look like? Time looked like snow dropping silently into a black room or it looked like a silent film in an ancient theater, 100 billion faces falling like those New Year balloons, down and down into nothing. That was how Time smelled and looked and sounded."
- Ray Bradbury
The Martian Chronicles