You grow up the day you have the first real laugh at yourself.
You can only be young once. But you can always be immature.
Human beings are the only creatures that allow their children to come back home.
What I look forward to is continued immaturity followed by death.
There's no point in being grown up if you can't be childish sometimes.
By the time I'd grown up, I naturally supposed that I'd be grown up.
To be mature means to face, and not evade, every fresh crisis that comes.
Every human being on this earth is born with a tragedy, and it isn't original sin. He's born with the tragedy that he has to grow up. That he has to leave the nest, the security, and go out to do battle. He has to lose everything that is lovely and fight for a new loveliness of his own making, and it's a tragedy. A lot of people don't have the courage to do it.
Maturity is only a short break in adolescence.