Be not children in understanding.

He is of age; ask him.

Maturity has more to do with what types of experiences you've had and what you've learned from them and less to do with how many birthdays you've celebrated.

Maturity is often more absurd than youth and very frequently is most unjust to youth.

Maturity is the time of life when, if you had the time, you'd have the time of your life.

My experience is that as soon as people are old enough to know better, they don't know anything at all.

One stops being a child when one realizes that telling one's trouble does not make it better.