One example of a funny quote about aging is "Age is an issue of mind over matter. If you don't mind, it doesn't matter," by Mark Twain. Another example is "True terror is to wake up one morning and discover that your high school class is running the country," by Kurt Vonnegut.
Mark Twain was an American writer during the 19th and 20th centuries. His most famous works are the novels "The Adventures of Tom Sawyer" and "The Adventures of Huckleberry Finn." His writings exhibit his sharp wit and sense of humor. While he was a successful author, Twain invested money into a few endeavors that lost him a great deal of money and put him into debt for some time. Before becoming an author, Twain apprenticed with a printer, was a riverboat pilot on the Mississippi River and also spent some time in the mining industry.
Kurt Vonnegut was an American author during the 20th century and early 21st century. During his lifetime, he published 14 novels, three collections of short stories, five plays and five pieces of non-fiction work. One of his most famous novels is "Slaughterhouse-Five," which displays a dark aspect of satire. Other examples of his works include "Fates Worse Than Death" and "A Man Without a Country."