I believe that maturity is not an outgrowing, but a growing up: that an adult is not a dead child, but a child who survived. I believe that all the best faculties of a mature human being exist in the child. . . . that one of the most deeply human, and humane, of these faculties is the power of imagination.

maturity is when you can finally ride the ups and downs of life without getting tossed around by them you don’t expect everything to be perfect you know change is a constant you don’t judge yourself when times get hard you live in gratitude you enjoy the good when it is here

Certainly nothing is unnatural that is not physically impossible.

Maturity is the ability to control your anger and settle your differences without violence or resentment.
Maturity is patience; it’s the willingness to pass up short-term pleasure for long-term gain. It’s the ability to “sweat it out” in spite of heavy opposition or discouraging setbacks. It’s the capacity to face unpleasantness and frustration without complaining or collapsing.
Maturity is humility. It’s being big enough to say, “I was wrong,” and when you are right, never needing to say, “I told you so.”
Maturity is the ability to make a decision and follow through with it instead of exploring endless possibilities and doing nothing about any of them.
Maturity means dependability, keeping your word, and coming through in a crisis. The immature are masters of alibi; they’re the confused and the disorganised. Their lives are a maze of broken promises, former friends, unfinished business, and good intentions.
Maturity is the art of being at peace with what you can’t change, having the courage to change what you can, and the wisdom to know the difference.

Every other thing can actually wait but not the upbringing of a child.

Maturity' really means: being very unsurprised by, and calm around, pain and disappointment.

Age is not an accomplishment, and youth is not a sin.

Childhood is not from birth to a certain age and at a certain age
The child is grown, and puts away childish things. Childhood is the kingdom where nobody dies.
Nobody that matters, that is.

Immaturity isn’t something to aspire to, but childlike faith is a valuable commodity in God’s Kingdom.

It is only in the period between adolescence and maturity and not during the earlier stages of development that any organism can unfold its full strength.

From childhood to youth is eternity, from youth to manhood, a season. Age comes in a night and is incredible.

Maturity: among other things, the unclouded happiness of the child at play, who takes it for granted that he is at one with his play-mates.

The course of life cannot change. Nature has but a single path and you travel it only once. Each stage of life has its own appropriate qualities — weakness in childhood, boldness in youth, seriousness in middle age, and maturity in old age. These are fruits that must be harvested in due season.

Depend upon it, there is nothing so unnatural as the commonplace.