Letters from the Earth
The eponymous story, “Letters from the Earth,” is a set of eleven letters written by Satan to the archangels Gabriel and Michael about his travels. Satan finds human beliefs about themselves almost insane, pointing out that their conception of heaven leaves out everything humans find most pleasurable in life (particularly sex). He also considers God’s hypocrisies: not forgiving Adam and Eve even though humans are supposed to forgive transgressors; forbidding jealousy but then calling himself a jealous God; killing all the large animals during Noah’s flood even though they weren’t guilty of anything; allowing cruelty and misery to torment the innocent.
Etiquette, Humor, Specimens, Miniature books, Religion
Mark Twain
Mark Twain, born Samuel Langhorne Clemens, was a prolific American author and humorist. Twain is best known for his novels Adventures of Huckleberry Finn  (1884), which has been called "the Great American Novel", and The Adventures of Tom Sawyer  (1876). He is extensively quoted. Twain was a friend to presidents, artists, industrialists, and European royalty. ([Source][1].) 

[1]:http://en.wikipedia.org/wiki/Mark_Twain