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
Every day we have plenty of opportunities...True beauty is born through our actions and aspirations...Endurance is not just the ability...To imply that religious believers have no right...Formal education will make you a living...The more time you spend contemplating...
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