-Virtue is human power, which is defined solely by man's essence (IV. Def. viii.), that is, which is defined solely by the endeavour made by man to persist in his own being.
Bertutea, gizakiaren ahalmena bera da, gizakiaren izaera soilaren arabera definitzen dena (8. Def. arab.), hots, (3. Zat. 7. Prop.