Quotes from book
"—All You Zombies—"
" '—All You Zombies—' " is a science fiction short story by American writer Robert A. Heinlein. It was written in one day, July 11, 1958, and first published in the March 1959 issue of Fantasy and Science Fiction magazine after being rejected by Playboy.

“Temporal agents always notice time and date; we must.”
"—All You Zombies—" (1958)
Context: I was polishing a brandy snifter when the Unmarried Mother came in. I noted the time — 10: 17 P. M. zone five, or eastern time, November 7th, 1970. Temporal agents always notice time and date; we must.
The Unmarried Mother was a man twenty-five years old, no taller than I am, childish features and a touchy temper. I didn't like his looks — I never had — but he was a lad I was here to recruit, he was my boy. I gave him my best barkeep's smile.