Famous children's author Dr. Seuss writes, "Today you are you! That is truer than true! There is no one alive who is you-er than you!" This is one of many famous sayings that make good birthday quotes.
Famous quotes that reflect on life's meaning can be personalized as birthday messages. For example, 20th-century Scottish theologian William Barclay writes, "There are two great days in a person's life - the day we are born and the day we discover why." Television personality Oprah Winfrey reflects, "The more you praise and celebrate your life, the more there is in life to celebrate."
Famous quotes for birthdays can also come from ancient sources. For example, this quote from the Roman playwright Plautus could be personalized in a birthday message: "Let us celebrate the occasion with wine and sweet words." Fourth-century Roman poet Ausonius observes, "Let us never know what old age is. Let us know the happiness time brings, not count the years."
Humorous quotes about growing older are also appropriate for birthdays. Author Truman Capote writes, "Life is a moderately good play with a badly written third act." Author Jennifer Yane explains, "Inside every older person is a younger person wondering what happened." Mark Twain, one of America's most famous humorists, also reflects on the perspective of growth: "When I was a boy of fourteen, my father was so ignorant I could hardly stand to have the old man around. But when I got to be twenty-one, I was astonished a how much he had learned in seven years."