I spent a couple of years between eleven and thirteen analysing the social evaluations that were taken for granted, also acquiring a thorough scepticism about processes regarded as causal, and the consistency of the physical world, as well as the reliability of my own mental processes. By the time I was thirteen I was running out of things to think about, so starting on a run of exam-taking seemed all the more appropriate, as I was finding it difficult to make use of spare time.

Letters from Exile (2004)