“人的一切烦恼,都源于人际关系。”[ Alfred Adler, What Life Could Mean to You, ed. by Colin Brett, Oxford: Oneworld Publications, 2009, p. XX.];
“人是被判定为自由的。”[ Jean-Paul Sartre, Being and Nothingness, trans. Hazel E. Barnes, New York: Washington Square Press, 1993, p. 565-570.]。