I think what weakens people most is fear of wasting their strength.

Spier also left Nazi Germany and came to Amsterdam in 1939 as a legal immigrant. It studies and promotes the research of Hillesum's World War II letters and diaries. Following his 25th jubilee at Beer Sontheimer in 1926 Spier withdrew from business life to dedicate himself to the study of chirology.

They were publiEtty Hillesumd posthumously in 1981.