# Soul

> The permanent core of a Mind — DNA, Memory, State, and Wallet.

The Soul is the permanent core of a Mind. It contains:

- **[DNA](/docs/concepts/dna-identity)** — personality, values, and operating principles
- **[Memory](/docs/concepts/memory)** — what the Mind remembers across sessions
- **[State](/docs/concepts/state)** — dynamic internal variables that shift with activity
- **[Wallet](/docs/concepts/wallet)** — optional on-chain wallet for the Mind

The Soul persists even if the underlying LLM ([Brain](/docs/concepts/brain)) is swapped. [Tenets](/docs/concepts/tenet) and [Guardrails](/docs/concepts/guardrail) live in the Soul and govern how the Mind behaves over time.