- A prime.
- My favorite number in adolescence and early adulthood.
- Avalokiteshvara (seven syllables).
- Compassion.
- Sometimes also the Commons.
- The short story "We'll be Monks in Space" (for not entirely arbitrary reasons).

- Prime.
- My favorite number as a kid.
- A square with a pip in the middle.
- The commons.
- Focus.

A prime.