Before constructing the ideal state we must know what is the most desirable life for states and individuals.

1. The most desirable life for an individual?
2. True happiness flows from the possession of wisdom and virtue — not from the possession of external goods
3. A virtuous life MUST BE equipped with external goods as instruments

True happiness flows from the possession of wisdom and virtue, and not from the possession of external goods. But a virtuous life must be equipped with external goods as instruments.

Instruo— to build.

Instrument — to build.