Usually youth is for freedom and reform, maturity for judicious compromise, and old age for stability and repose.

Profundity of thought belongs to youth, clarity of thought to old age.

Eyes of youth have sharp sight but commonly not so deep as those of elder age.

Learning acquired in youth arrests the evil of old age; and if you understand that old age has wisdom for its food, you will so conduct yourself in youth that your old age will not lack for nourishment.

Age considers; youth ventures.

When you're young, you don't have any experience-you're charged up, but you're out of control. And if you're old and you're not charged up, then all you have is memories. But if you're charged and stimulated by what's going on around you, and you also have experience, you know what to appreciate and what to pass by.