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A.Word.A.Day (May 7, 2007) http://wordsmith.org/words/stormy_petrel.html
“Any book worth banning is a book worth reading.”
“A book worth reading is worth owning.”
Variant: If a book is worth reading, it is worth buying.
“A picture may be worth a thousand words, a formula is worth a thousand pictures.”
                                        
                                        Dijkstra (EWD1239: A first exploration of effective reasoning) 
1990s
                                    
The Lewis Carroll Picture Book (1899) p. 3.
Source: On the Mystical Body of Christ, pp. 419-420
 
                            
                        
                        
                         
                            
                        
                        
                        