Latin verbs are inflected for five formally parallel “tense-modes” [...], two aspects, and two voices. Within each combination of tense-mode, aspect, and voice, there are six forms differentiating person and number of subject. All of these forms are used at the center of clauses forming or participating in sentences of the favourite type: they are ‘finite’ or ‘predicative’ forms.
- Hockett (1958), Pag. 238