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
May your trails be crooked, winding, lonesome...Take care of all your memories...The love that lasts longest is the love...God's dream is that you and I and all of us...The very concept of objective truth is fading out...As young West Point cadets, our motto was...
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