We are an intelligent species and the use of our intelligence quite pr…

Carl Sagan
415 citations
We are an intelligent species and 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. ✨ Carl Sagan (2011). Broca's Brain: Reflections on the Romance of Science, p.17, Ballantine Books
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