'Speak when you're spoken to!' The Queen sharply interrupted her. 'But if everybody obeyed that rule,' said Alice, who was always ready for a little argument, 'and if you only spoke when you were spoken to, and the other person always waited for you to begin, you see nobody would ever say anything, so that - ' 'Ridiculous!' cried the Queen. 'Why, don't you see, child - ' here she broke off with a frown, and, after thinking for a minute, suddenly changed the subject of the conversation.
Lewis CarrollWhen you have made a thorough and reasonably long effort, to understand a thing, and still feel puzzled by it, stop, you will only hurt yourself by going on.
Lewis Carroll