I learnt, for the first time, the joys of substituting hard, disciplined study for the indulgence of day-dreaming.

The techniques have galloped ahead of the concepts. We have moved away from studying the complexity of the organism; from processes and organisation to composition.

I met Hilary Vaughan at a Student Ball in 1944 and we married in the summer of 1946, as soon as I graduated.

Apart from two periods of intense study, of music between the ages of 12 and 14 and of mathematics between the ages of 14 and 16, I coasted, daydreaming, through most of my school years.

I learnt, for the first time, the joys of substituting hard, disciplined study for the indulgence of day-dreaming.

Peer reviewers go for orthodoxy ... Many of the great 19th-century discoveries were made by men who had independent wealth-Charles Darwin is the prototype. They trusted themselves.

We paid off our debts, we learned some, made friends and returned in 1950 with a larger view of life. I had, however, no home, no income of any kind and no prospects whatsoever.