I agree with Oko's comments, plus I really like Rug's quote from Mark Twain.
I don't think you can really put an age to when a person hits a certain level maturity. But I get the intent of your query. I think it really boils down to when do you hit that level of maturity. It isn't directly an age thing, and it will be different for each person. One measure I have witnessed is displayed by a nephew of mine that showed a high level of maturity at a young age. - He was able to learn from others mistakes, and made smart decisions based on those.
|