We—we Americans, we Russians—have spent 43 years and vast national treasure in making ourselves exquisitely vulnerable to instant annihilation. We have done it in the name of patriotism and “national security,” so no one is supposed to question it.

— Carl Sagan Billions and Billions: Thoughts on Life and Death at the Brink of the Millenium (1997)

More quotes by Carl Sagan

Cosmos (1980)

Cosmos (1980)

Cosmos (1980)

Contact (1985)

The Demon-Haunted World : Science as a Candle in the Dark (1995)

Quote text and notes from Wikiquote: Carl Sagan (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.