Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us. ...

The secrets of evolution, are time and death.
There's an unbroken thread that stretches from those first cells to us. (Carl Sagan)

Carl Sagan Quotes Pictures

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.

Carl Sagan Quotes: The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.