A face is not only form, it is also movement. When part of it goes still, it is not your appearance that changes – it is what other people read in you.

Many people hear the word profiling and think of criminology. What we actually do is something else: we describe what is there. Judgement only comes in once there is a task – and even then it is not the person being judged.

No single field could answer my core questions. Why genetics, neurobiology, psychology and philosophy grew into a field of their own – and what it is meant to answer.