Carl Sagan
No other planet in the solar system is a suitable home for human beings; it's this world or nothing. That's a very powerful perception.
More quotes and aphorisms
Who are we? We find that we live on...The problem is not that there are problems...I will prepare and some day my chance will come...The Roaring Twenties were the period...I'm just a lucky slob from Ohio...I have a best friend as a husband...