It means, “I don’t understand this, either.” Christopher A. Francese speaks out about Diploma Latin in the nytimesonline. I do recall quite clearly the commencement ceremony at which Howard Swearer, fifteenth president of Brown University, then recently arrived from a certain college in the Midwest where Latin is optional, read his commission out of a hat.Yes, he took off his velvet hat and stared into it, intoning painfully, “Auctoritate mihi commissa . . .”spanopedsmall