| David's father served in the British Army’s Royal Engineers Corps during WWI. |
| David developed an interest in mathematics at the age of four. |
| During WWII, David and his sister were relocated to Devon in England. |
| David did not attend school while living with his grandmother. |
| His love for arithmetic calculations blossomed at the age of five. |
| David was a top student in mathematics at his school. |
| While studying at St Faith’s School in Cambridge, David earned a scholarship. |
| He excelled academically at Winchester College. |
| David's teachers critiqued his handwriting abilities. |
| He submitted his doctoral thesis earlier than expected. |
| David met his wife, Margaret Scrase, while studying in the US. |
| He challenged and triumphed over David Bronstein in a chess match. |
| The chess match against Bronstein took place at Trinity Hall Cambridge. |
| David fell ill with a respiratory disease during his time at Churchill College, Cambridge. |
| He was diagnosed with pneumonia in the winter of 1964. |
| David participated in a scientific conference in Russia in 1965. |
| He cherished the beautiful scenery of California where he lived. |
| Conflict with Birmingham University led to David's resignation. |
| He devoted his time and resources to conducting research in his laboratory. |
| David served as the president of the Society for Psychical Research. |
