Attend me. How do you prove that there are eggs in a bird's nest? Don't strain your gray matter: go climb the tree and find out. There is no other way. (Robert A. Heinlein)

Attend me. How do you prove that there are eggs in a bird's nest? Don't strain your gray matter: go climb the tree and find out. There is no other way.

Robert A. Heinlein

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climb find gray matter nest prove strain tree way eggs

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