“Suppose your father… walked into this room at the ordinary human pace of walking. And suppose just behind him was his father. How long would we have to wait before the ancestor who enters the now-open door is a creature who normally walked on all fours? The answer is a week.”

—  Carl Sagan

The Varieties of Scientific Experience: A Personal View of the Search for God (2006)

Adopted from Wikiquote. Last update June 3, 2021. History

Help us to complete the source, original and additional information

Do you have more details about the quote "Suppose your father… walked into this room at the ordinary human pace of walking. And suppose just behind him was his f…" by Carl Sagan?
Carl Sagan photo
Carl Sagan 365
American astrophysicist, cosmologist, author and science ed… 1934–1996

Related quotes

Gene Wolfe photo

“You have a walking stick. Suppose it could walk by itself, and that it chose to walk away from you. […] It would no longer be a walking stick at all, only a stick that walked.”

Gene Wolfe (1931–2019) American science fiction and fantasy writer

Volume 3, Ch. 13
Fiction, The Book of the Short Sun (1999–2001)

Bob Dylan photo

“Your lover who just walked out the door, has taken all his blankets from your floor.”

Bob Dylan (1941) American singer-songwriter, musician, author, and artist

Song lyrics, Bringing It All Back Home (1965), It's All Over Now, Baby Blue

Stephen Chbosky photo
Parker Palmer photo
Conrad Aiken photo
Chris Carrabba photo
Clive Barker photo

“My father once discovered that one cannot "walk off" gangrene.”

James Nicoll (1961) Canadian fiction reviewer

[dvhsne$d0k$1@reader2.panix.com, 2006]
2000s

Related topics