One example of a quote for a 100th birthday celebration is "The first 100 years are the hardest," by Wilson Mizner. Another example is "They tell you that you'll lose your mind when you grow older. What they don't tell you is that you won't miss it very much," by Malcom Cowley.
Quotes about the 100th birthday celebration and aging range from funny to sentimental in tone. They may be used in birthday cards and other forms of birthday messages. Using quotes in a birthday card is a fun way to make it more personal and let the recipient know that she is cared for and admired.
Another quote about aging that is appropriate for a birthday card is "Old age is an excellent time for outrage. My goal is to say or do at least one outrageous thing every week," by Louis Kronenberger, who was an American critic and writer. He worked for the New York Times as well as Time and Fortune magazines.
"As we grow old, the beauty steals inward," is one quote about aging. This quote is from Ralph Waldo Emerson, a 19th-century American poet and philosopher. "Self-Reliance" is considered one of his best and most famous essays.