Metal Touch Space

I found this really cool music track named "Touch Space", by an outfit called Test Shot Starfish. You can hear it on YouTube. It includes some samples of a man speaking. The words are intriguing, so I went searching for the source(s). As presented in the song, the prose seems to be in three parts:

Part 1:

Does the blood move in your hand?
Does your hand move to touch metal?
Does that metal move to touch space?
Do wild thoughts of travel and migration move behind your flesh?
They do.

Part 2:

A billion years ago
when we came out of the sea of this earth
And we formed a spine for ourselves
And reared ourselves up upon this land
And we moved unto the land
And we lived in caves, and were terrified
Then we lived in trees, and were afraid
And we finally formed cities against the night
[Now we] are daring to do the great thing
And we're going into space
And we're going to live forever

Part 3:

You are part of a long effort of the universe to understand itself
This blind thing turning in its sleep
You're part of that blindness coming awake
Every single one of you is a cell of this thing struggling to stay alive
Dying every day, rebirthing itself every night
And that's what space travel is all about

It turns out that all of the text is by Ray Bradbury, the famous science fiction author and poet. In fact, he said these things at public speaking engagements, where he was recorded. I think - though I'm not sure - that the voice we hear in the song is actually Bradbury's, from the recordings.

The words in Part 1 were spoken during a symposium called Why Man Explores, held at the California Institute of Technology on July 2, 1976, and sponsored by NASA. The full transcript of the symposium is available at Google Books: Why Man Explores. He says he's quoting from a poem he had written before. It was part of an ongoing project he worked on for decades, ultimately entitled Leviathan '99, the stated goal of which was to bring Moby-Dick into the space age.

Parts 2 and 3 come from one source: a lecture he gave named Space Exploration as The Theology for Our Time. I haven't found the full transcript of this lecture, but you can hear the recording on YouTube: Space Exploration as The Theology for Our Time. Part 2 begins at 33:11, and Part 3 at 35:32.