“I regret that I am not clear as to what you intend by 'arisch'. I am not of Aryan extraction: that is Indo-Iranian; as far as I am aware none of my ancestors spoke Hindustani, Persian, Gypsy, or any related dialects. … But if I am to understand that you are enquiring whether I am of Jewish origin, I can only reply that I regret that I appear to have no ancestors of that gifted people. … I have been accustomed, nonetheless, to regard my German name with pride, and continued to do so throughout the period of the late regrettable war, in which I served in the English army. I cannot, however, forbear to comment that if impertinent and irrelevant inquiries of this sort are to become the rule in matters of literature, then the time is not far distant when a German name will no longer be a source of pride.”

Letter to Central Association of German Citizens of the Jewish Faith, 3 [5] April 1920, as quoted in Alice Calaprice, The Ultimate Quotable Einstein (2010), p. 195; citing Israelitisches Wochenblatt, 42 September 1920, The Collected Papers of Albert Einstein, Vol. 7, Doc. 37, and Vol. 9, Doc 368.<!-- obviously, parts of this can be taken out of context -->
1920s

"I Am What I Am," from La Cage aux Folles (1983) http://www.bassey.co.uk/blog/shirley_bassey/2006_08_07_peggyblog.html

No estoy seguro de que yo exista, en realidad. Soy todos los autores que he leído, toda la gente que he conocido, todas las mujeres que he amado. Todas las ciudades que he visitado, todos mis antepasados...
Source: El Pais, 1981 http://elpais.com/diario/1981/09/26/ultima/370303206_850215.html; translation: The Guardian, 2008 http://www.theguardian.com/books/2008/jun/10/jorgeluisborges

Source: Hegel's Idealism: The Satisfactions of Self-Consciousness (1989), p. 21

Source: Echoes from the Bottomless Well (1985), p. 40
Context: "What are you?"
— I am no What! I am only I …
In relation to you!

Not My Father's Son: A Family Memoir (2014)

Ah, ma foi! Je n'en sais rien. Moi je suis mon ancêtre.
When needled about his lack of noble ancestry, recounted in Sydney Smith, Saba Holland, A Memoir of the Reverend Sydney Smith (1855), p. 245. Compare: "Curtius Rufus seems to me to be descended from himself", Tacitus recounting a saying of Tiberius, Annals, book xi. c. xxi. 16.; "To Harmodius, descended from the ancient Harmodius, when he reviled Iphicrates [a shoemaker’s son] for his mean birth, 'My nobility,' said he, 'begins in me, but yours ends in you'", Plutarch Apophthegms of Kings and Great Commanders, Iphicrates (rejected by some critics as not a genuine work of Plutarch).

Source: New Brexit Party AM calls Tommy Robinson 'courageous' https://www.bbc.co.uk/news/uk-wales-politics-48295617 BBC News (16 May 2019)