Laudator Temporis Acti

Suetonius, Life of Augustus 88 (tr. Catharine Edwards; brackets in original):

He did not particularly observe orthography, that is the practice and rule of spelling as taught by the grammarians, and seems rather to have followed the guidance of those who advise writing words as they are spoken. As for his changing or leaving out not just letters but even syllables, that is a mistake people often make. I would not myself have pointed it out except that, to my surprise, others have reported that he appointed a replacement for a provincial governor who was an ex-consul on the grounds that he was an uncouth and ignorant fellow, for he had noticed that the man wrote ixi for ipsi ['themselves'].

orthographiam, id est formulam rationemque scribendi a grammaticis institutam, non adeo custodit ac videtur eorum potius sequi opinionem, qui perinde scribendum ac loquamur existiment. nam quod saepe non litteras modo sed syllabas aut permutat aut praeterit, communis hominum error est. nec ego id notarem, nisi mihi mirum videretur tradidisse aliquos, legato eum consulari successorem dedisse ut rudi et indocto, cuius manu "ixi" pro "ipsi" scriptum animadverterit.

Related post: Spelling.