For some unaccountable reason, finally unpacking from my holiday, I found tucked away in the zip pocket of my two-year-old suitcase the Essay Question for an exam which I (apparently) took in Cambridge on Thursday June 3rd 1965 between 1.30 and 4.30 in the afternoon.

I had three hours to discuss one of the following (which did I choose? I haven't a clue. I do remember that my wife had miscarried at five months two weeks earlier.)

1. Democtritus

2. Plato's Republic.

3. Aristotle's Criticism of Plato.

4. Necessity.

5. Intention.

6. Existentialism.

7. Locke and Hume on personal identity.

8. Spinoza is Descartes made consistent.

9. Kant and causation.

10 Rules and Ideals.

11. Truth.

12. Falsibility.