在1951年的《The Director, the Thief, the Actress & the Rogue》(The Origins of Totalitarianism)一书扉页,汉娜·阿伦特(Hannah Arendt)引用了卡尔·西奥多·雅斯贝尔斯(Karl Theodor Jaspers)的一句话: “既不沉于过去,也不倾心未来。最重要的是全身心于现在。” (Give yourself up neither to the past nor to the future. The important thing is to remain wholly in the present.)