Dr Carl Sagan Understanding Quotes & Sayings


 Dr Carl Sagan quotes 
 Dr Carl Sagan quotes 
Suggest Revision: You have to know the past to understand the present.
 
 Dr Carl Sagan quotes 
 Dr Carl Sagan quotes 
Suggest Revision: ... the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.
 
 Dr Carl Sagan quotes 
 Dr Carl Sagan quotes 
Suggest Revision: The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
 
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Quotes by Dr Carl Sagan
quotes by Dr Carl Sagan
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