The immature man wants to die nobly for a cause, while the mature man wants to live humanely for one.

The immature man wants to die nobly for a cause, while the mature man wants to live humanely for one.

By the age of twenty, any young man should know whether or not he is to be a specialist and read more

By the age of twenty, any young man should know whether or not he is to be a specialist and just where his tastes lie. By postponing the question we have set on immaturity a premium which controls most American personality to its deathbed.

Man's maturity: to have regained the seriousness that he had as a child at play.

Man's maturity: to have regained the seriousness that he had as a child at play.

Only the middle-aged have all their five senses in the keeping of their wits.

Only the middle-aged have all their five senses in the keeping of their wits.

To make mistakes is human; to stumble is commonplace; to be able to laugh at yourself is maturity.

To make mistakes is human; to stumble is commonplace; to be able to laugh at yourself is maturity.

When I grow up I want to be a little boy.

When I grow up I want to be a little boy.

You're never too old to grow up.

You're never too old to grow up.

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

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

I live in that solitude which is painful in youth, but delicious in the years of maturity.

I live in that solitude which is painful in youth, but delicious in the years of maturity.