Every person born into this world has a natural right to sustain, preserve, and defend his own life to the… — Giovanni Boccaccio

Every person born into this world has a natural right to sustain, preserve, and defend his own life to the best of his ability.

In the original (Italian)

Natural ragione è di ciascuno che ci nasce, la sua vita, quanto può, aiutare e conservare e difendere.

Source: Wikiquote · CC BY-SA 4.0