Edith Wharton’s childhood German tutor, Anna Bahlmann, also taught her English and American literature; Norse, Greek, and Roman mythology; and history, art, and architecture. In 1878 Wharton called Bahlmann her “supreme critic” in a letter. Bahlmann is mentioned only four times in Wharton’s memoir and only once by name. One scholar suggested that Wharton’s “conviction about her intellectual and artistic isolation…compelled her to deny her closeness to her teacher.”

After he was captured by pirates, Diogenes of Sinope was sold as a slave to Xeniades, who had the Cynic philosopher educate his sons. “At home he taught them to attend to their own needs,” writes Diogenes Laërtius in his Lives of the Eminent Philosophers, “to live on plain food and water, to wear their hair short and unadorned, to go barefoot and without a tunic, and to be silent and keep their eyes lowered when walking in the streets.”