Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees. ...

But down deep, at the molecular heart of life we're essentially identical to trees. (Carl Sagan)

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Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.

Carl Sagan Quotes: But down deep, at the molecular heart of life we're essentially identical to trees.