London always reminds me of a brain. It is similarly convoluted and circuitous. A lot of cities, especially American ones like New York and Chicago, are laid out in straight lines. Like the circuits on computer chips, there are a lot of right angles in cities like this. But London is a glorious mess. It evolved from a score or so of distinct villages, that merged and meshed as their boundaries enlarged. As a result, London is a labyrinth, full of turnings and twistings just like a brain.

By bringing together what we know and what we don't know through analogy, metaphorical thinking strikes the spark that ignites discovery.

The mind revels in conjecture. Where information is lacking, it will gladly fill in the gaps.

Sometimes, you need a door slammed in your face before you can hear opportunity knock.

Advice is given freely because so much of it is worthless.

I believe aphorisms are best when first read in the wild, free from the confines of any categories.

Metaphor lives a secret life all around us. We utter about six metaphors a minute. Metaphorical thinking is essential to how we understand ourselves and others, how we communicate and learn, discover and invent.