Whenever you read a book or have a conversation, the experience causes physical changes in your brain. It's a little frightening to think that every time you walk away from an encounter, your brain has been altered, sometimes permanently. (George Johnson)

Whenever you read a book or have a conversation, the experience causes physical changes in your brain. It's a little frightening to think that every time you walk away from an encounter, your brain has been altered, sometimes permanently.

George Johnson

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