
Марк Твен: Цитаты на английском языке
Марк Твен было американский писатель, журналист и общественный деятель. Цитаты на английском языке.
“Every one is a moon, and has a dark side which he never shows to anybody.”
Pudd'nhead Wilson's New Calendar, Ch. LXVI
Following the Equator (1897)

“If you tell the truth you don't have to remember anything.”
Notebook entry, January or February 1894, Mark Twain's Notebook, ed. Albert Bigelow Paine (1935), p. 240 http://books.google.com/books?id=DjBVlb7cBSIC&pg=PA240
Вариант: If you tell the truth you do not need a good memory!
Источник: The Adventures of Huckleberry Finn
“The best way to cheer yourself is to try to cheer someone else up.”
Variant of this quote "The best way to cheer yourself is to cheer somebody else up." is misattributed to Albert Einstein.
Источник: According Quote Investigator Mark Twain did write a version of this saying in a personal notebook in 1896, and it was published by 1935 in “Mark Twain’s Notebook”. https://quoteinvestigator.com/2012/12/21/cheer-somebody/

Вариант: Never argue with an idiot. They will drag you down to their level and beat you with experience.

No known source in Twain's works.
The earliest known source is a Usenet post from November 2000 https://groups.google.com/forum/message/raw?msg=israel.francophones/j_b0peHVcJw/YN5cG6Pdk6QJ.
Disputed
“Whenever you find that you are on the side of the majority, it is time to reform.”
Alternate (also Twain's): Whenever you find that you are on the side of the majority, it is time to pause and reflect.
Источник: Mark Twain's Notebook (1935), p. 393
“I have never let my schooling interfere with my education.”
Вариант: Never let your schooling interfere with your education.
Вариант: If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.