Sigmund Freud skriver til sin venn Wilhelm Fliess i Berlin (her gjengitt i engelsk oversettelse -- originalen er på tysk):
"Hail, cherished Wilhelm! May your dear, good, and strong wife, in whom hope and fulfillment thus far have always met, become the darling of fate as a mother as well. Martha was joyous as I have rarely seen her. I humbly ask to have my name entered as a poor uncle. ..."
Freud, S., et al. (1985). The complete letters of Sigmund Freud to Wilhelm Fliess : 1887-1904. Cambridge, Mass, Belknap Press of Harvard University Press.
Utdrag gjengitt her: