Benito Jerónimo Feijoo,
Essays, or discourses, vol. 1…
(1780)
“ Livilla, the sister of these two, was another species of monster, for she was convicted of adultery, and murdering her own husband. But the dissimilitude which we have hitherto remarked among the individuals of this family, may be called trivial, compared to that which appeared between Germanicus and his son Caligula; the first, was an harmonious compound of virtues and graces, the last the tail or fag-end of abominations; in fine, he was so bad, that people were used to say, nature had made him as he was to shew to what a degree mankind could be formed perverse. ”
