'Here's how time works. When you're young, your mind is running really fast, like a camera over-cranked to produce a slow-motion film, so the days and weeks and summers seem incredibly long. When you grow old, the mind slows down, doesn't clock so much sensory stimuli, so the days and years flash by. The same of things happens in a day. Morning time seems longer because your mind is whirring. Evening times goes by faster, because you've slowed down - unless you're being stimulated by lively company at dinner.'
Roger Deakin, Notes from Walnut Tree Farm, p.259.