Authors / Carl Sagan

Carl Sagan quotes

1934–1996 · American astronomer and science writer

Sagan brought astronomy to millions with the TV series Cosmos.

1 real · 1 not theirs

1 quotes traced to Carl Sagan's own work or a reliable witness.

Sourced

Extraordinary claims require extraordinary evidence.

Sagan popularised it; similar wording was used earlier by Marcello Truzzi.

Source: Cosmos, episode 12 (1980)

1 famous lines credited to Carl Sagan that are misquoted, unsourced or belong to someone else.

Not theirs

Somewhere, something incredible is waiting to be known.

Actually: Journalist Sharon Begley, describing Sagan in Newsweek (1977).