Translation of "Realist" in Spanish

Stockdale was a realist.

Stockdale era realista.

Optimist, realist or something else?

¿optimista, realista o algo más?

He's a realist, and doesn't believe that miracles are possible.

Él es un realista, y no cree que los milagros sean posibles.

- I'm a realistic person.
- I am a realistic person.
- I'm a realist.

- Soy un hombre realista.
- Soy una persona realista.