Documentary on culture, education and scientific research in the Spain of the twenties of the last century.
| Actor | Role |
|---|---|
| RRamón SantiagoSelf (archive footage) | Self (archive footage) |
| CCajal SantiagoSelf (archive footage) | Self (archive footage) |
 Benito Pérez GaldósSelf (archive footage) | Self (archive footage) |
| RRamón Menéndez PidalSelf (archive footage) | Self (archive footage) |