Question: Mark Twain quotes? If you tell the truth you don't have to remember anything. \n\n\nIn Paris they simply stared when I spoke to them in French; I never did succeed in making those idiots understand their language. \n\n\nIn religion and politics, people's beliefs and convictions are in almost every case gotten at second hand, and without examination. \n\n\nIt is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt. \n \n\nIt is curious that physical courage should be so common in the world and moral courage so rare. \n \n\nKeep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great. \n \n\nMost people are bothered by those passages of Scripture they do not understand, but the passages that bother me are those I do understand. \n \n\nNever put off until tomorrow what you can do the day after tomorrow. \n \n\nThe best way to cheer yourself is to try to cheer someone else up.

Answer: 1 is Twain. 2 is from Innocents Abroad  3,4,5 are often attributed to Twain, but I suspect he got them from elsewhere, or never said them.  6 is not Twain.  7 is one of his better lines.  8 not one I am acquainted with.  9 is very much not anything Twain would ever say.\nOf the three added, the last one is one of his most famous, although you have the phrasing off a bit.  The first is just a restatement of number 1.  The second is from Tom Sawyer.
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