Monotony collapses time; novelty unfolds it. You can exercise daily and eat healthily and live a long life, while experiencing a short one. If you spend your life sitting in a cubicle and passing papers, one day is bound to blend unmemorably into the next - and disappear.

Moonwalking with Einstein: The Art and Science of Remembering Everything (ed. Penguin UK, 2011) - ISBN: 9780141952277