I N T R O D U C T I O N T O V O L U M E 1 4 l i i i had indeed been awarded the prize in November 1922, Einstein recommended that his Zurich family purchase a house (Vol. 13, Doc. 400). However, soon after his return to Berlin from the Far East in March 1923, a serious disagreement arose about investment strategies. In May 1923, Einstein informed Mileva that he was having 45,000 Swiss francs sent from Stockholm to Zurich for a deposit on a house purchase, and that the rest would be invested in her name in the U.S. in foreign bonds. She would receive the interest, but Einstein would administer the principal (Docs. 37, 39). Mileva objected, stating that she would feel “more at ease” if all the funds were deposited in Switzerland (Doc. 46). In response, Einstein berated her for her “lack of gratitude” and “mistrust” while reassuring her that the money would be invested in her name. He explained that the financier Leopold Koppel had recommended that Einstein himself administer the investment “for technical rea- sons” (Doc. 50). In mid-June, Einstein instructed Albert Karr-Krüsi, who dealt with his alimony payments in Zurich, to give Mileva 40,000 francs for the deposit on the house (Doc. 65). These exchanges led to a serious rift between Einstein and his older son. In a letter highly critical of Einstein’s management of the prize money and the discrep- ancies in the promised amounts, Hans Albert chastised his father for these deci- sions and demanded that the American bank send them confirmation that the money was indeed directly at his mother’s disposal (Doc. 60). Einstein was greatly taken aback. To Ehrenfest he described the letter as “so impudent and ugly” that he would cancel the planned joint vacation with his sons in the summer. He wrote to his younger son, Eduard, that it was “doubtful” whether he could ever renew his ties with his older brother and suggested that the two of them vacation without Hans Albert. He lamented the estrangement from Hans Albert, yet felt that no fa- ther should suffer such treatment at the hands of a child (Docs. 59, 68, 77). Einstein confided in Heinrich Zangger that both he and Hans Albert suffered deeply from the consequences of this episode, but the expression of Hans Albert’s “deeply root- ed attitude” had become “unbearable” to him (Doc. 61). Mileva described a nonextant letter by Einstein to Hans Albert as “so harsh” that she had decided not to show it to their son and implored him to write “some friend- lier words” (Doc. 62). Ehrenfest pleaded with Einstein to reconcile with the teen- ager (Doc. 67). The childless Anschütz-Kaempfe, too, who had become a “second father” to Hans Albert, advised him on how to assuage Einstein (Docs. 90, 92) and eventually served as a successful peacemaker (Abs. 89, Docs. 70, 94, 107). By late July 1923 Hans Albert had apologized, and Einstein vacationed with both sons for eight days in August at Lautrach Castle, as originally planned