【格言】When a book and a head collide and a hollow sound is heard, must it always have come from the book?  posted on 2017/01/01 (  511 )

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When a book and a head collide and a hollow sound is heard, must it always have come from the book?

When a book and a head collide and a hollow sound is heard, must it always have come from the book?

-- Georg Christoph Lichtenberg, The Waste Books