Carl Sagan

Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.

Carl Sagan

Stars are phoenixes, rising from their own ashes.

Carl Sagan

The boundary between space and the earth is purely arbitrary. And I’ll probably always be interested in this planet – it’s my favorite.

Carl Sagan

The candle flame gutters. Its little pool of light trembles. Darkness gathers. The demons begin to stir.

Carl Sagan

The Cosmos is all that is or ever was or ever will be.

Carl Sagan

The dangers of not thinking clearly are much greater now than ever before. It’s not that there’s something new in our way of thinking – it’s that credulous and confused thinking can be much more lethal in ways it was never before.

Carl Sagan

The desire to be connected with the cosmos reflects a profound reality, but we are connected; not in the trivial ways that astrology promises, but in the deepest ways.

Carl Sagan

The dumbing down of America is evident in the slow decay of substantive content, a kind of celebration of ignorance.

Carl Sagan

The Earth is a very small stage in a vast cosmic arena.

Carl Sagan

The fact that someone says something doesn’t mean it’s true. Doesn’t mean they’re lying, but it doesn’t mean it’s true.

Carl Sagan