“I see the last two millennia as laid out in columns, like a reverse ledger sheet. It's as if I'm standing at the top of the twenty-first century looking downwards to 2000. Future centuries float as a gauzy sheet stretching over to the left. I also see people, architecture and events laid out chronologically in the columns. When I think of the year 1805, I see Trafalgar, women in the clothes of that era, famous people who lived then, the building, etc. The sixth to tenth centuries are very green, the Middle Ages are dark with vibrant splashes of red and blue and the sixteenth and seventeenth centuries are brown with rich, lush colours in the furniture and clothing.”

“In fact the flexibility of our memories makes it relatively easy because we can meld all these different memories together seamlessly to invent a new imaginary scene, one which we have never even contemplated before, let alone witnessed. The flexibility of memory seems to be the key to imagining a future. Our millions of fragments of memories from different times of our lives are not set in stone; they can change, giving us endless, instant imaginative possibilities.”

“Medieval illustrations of the mind from the fourteenth century depict memories like snakes feeding into the imagination and, long before this, both Aristotle and Galen described memories not as archives of our lives, but as tools for the imagination.”

“I see the last two millennia as laid out in columns, like a reverse ledger sheet. It's as if I'm standing at the top of the twenty-first century looking downwards to 2000. Future centuries float as a gauzy sheet stretching over to the left. I also see people, architecture and events laid out chronologically in the columns. When I think of the year 1805, I see Trafalgar, women in the clothes of that era, famous people who lived then, the building, etc. The sixth to tenth centuries are very green, the Middle Ages are dark with vibrant splashes of red and blue and the sixteenth and seventeenth centuries are brown with rich, lush colours in the furniture and clothing.”