None are so old as those who have outlived enthusiasm.

What most persons consider as virtue, after the age of 40 is simply a loss of energy.

I will never be an old man. To me, old age is always 15 years older than I am.

Youth is when you're allowed to stay up late on New Year's Eve. Middle age is when you're forced to.

Aging is not lost youth but a new stage of opportunity and strength.

When grace is joined with wrinkles, it is adorable. There is an unspeakable dawn in happy old age.

How incessant and great are the ills with which a prolonged old age is replete.

Bashfulness is an ornament to youth, but a reproach to old age.

Forty is the old age of youth fifty the youth of old age.

Growing old is no more than a bad habit which a busy person has no time to form.