We're made of star-stuff by Carl Sagan

We wish to pursue the truth no matter where it leads — but
to find the truth we need imagination and skepticism both.
We will not be afraid to speculate — but we will be careful
to distinguish speculation from fact.

The Cosmos is full beyond measure of elegant truths, of
exquisite interrelationships, of the awesome machinery of nature.
The surface of the Earth is the shore of the cosmic ocean.
On this shore we've learned most of what we know.

Recently we've waded a little way out, maybe ankle deep, and the water
seems inviting. Some part of our being knows this is where we came from.
We long to return. And we can. Because the cosmos is also within us.
We're made of star-stuff. We are a way for the cosmos to know itself.
Carl Sagan