he is a madman full of streaks, full of lucid intervals.
Pure, correct, elegant and lucid language will be met with in men of courtly breeding and discrimination, though they may have been born in Majalahonda; I say of discrimination, because there are many who are not so, and discrimination is the grammar of good language, if it be accompanied by practice.
Among other things, he said the governor was against him, not to lose the presents his relations made him for reporting him still mad but with lucid intervals; and that the worst foe he had in his misfortune was his large property; for in order to enjoy it his enemies disparaged and threw doubts upon the mercy our Lord had shown him in turning him from a brute beast into a man.
But of all there were none he liked so well as those of the famous Feliciano de Silva’s composition, for their lucidity of style and complicated conceits were as pearls in his sight, particularly when in his reading he came upon courtships and cartels, where he often found passages like "the reason of the unreason with which my reason is afflicted so weakens my reason that with reason I murmur at your beauty;" or again, "the high heavens, that of your divinity divinely fortify you with…
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Although she was on heavy pain medication, she was still lucid.