"The sky is full of birds, the purple lupins stand up so regally and peacefully, two little old women have sat down on the box for a chat, the sun is shining on my face — and right before our eyes, mass murder. The whole thing is simply beyond comprehension."

8 June 1943, p. 602 

Etty: The Letters and Diaries of Etty Hillesum, 1941-1943

Edited by Klaas A. D. Smelik, translated by Arnold J. Pomerans, Wm. B. Eerdmans Publishing, 2002. On Google Books.