Age is just a number. It's totally irrelevant unless, of course, you happen to be a bottle of wine.

Whatever you may look like, marry a man your own age - as your beauty fades, so will his eyesight.

Youth has no age.

Youth is a blunder Manhood a struggle, Old Age a regret.

To teach how to live without certainty and yet without being paralysed by hesitation is perhaps the chief thing that philosophy, in our age, can do for those who study it.