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
Most importantly, you have to stay true to yourself...I am quite prehistoric, absolutely prehistoric...I'm very serious about no alcohol...Sometimes, in order to follow our moral compass...I do, indeed, close my door at times and surrender...Sometimes I feel my whole life has been...
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