Οι σοφοί μιλούν επειδή έχουν κάτι να πουν. Οι ανόητοι μιλούν επειδή πρέπει κάτι να πουν. Wise men speak because they have something to say; fools because they have to say something. Πλάτων (Plato), 427-347 B.C., Greek Philosopher
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