He left Chicago mostly because of financial reasons, being concerned about his pension provisions. His primary source of income was his salary and he received some additional money from book royalties, but avoided other lucrative sources of income for academics such as writing textbooks. He spent a lot on his frequent travels. He regularly spent summers in Austrian Alps, usually in the Tyrolean village Obergurgl where he enjoyed mountain climbing, and also visited Japan four times with additional trips to Tahiti, Fiji, Indonesia, Australia, New Caledonia and Ceylon. Divorce also caused him significant financial burden, and he mentioned that he lost significant money in a financial swindle.