A mature person is one who does not think only in absolutes, who is able to be objective even when deeply stirred emotionally, who has learned that there is both good and bad in all people and in all things, and who walks humbly and deals charitably with the circumstances of life, knowing that in this world no one is all knowing and therefore all of us need both love and charity.

The wise man does not expose himself needlessly to danger, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life — knowing that under certain conditions it is not worth while to live. He is of a disposition to do men service, though he is ashamed to have a service done to him. To confer a kindness is a mark of superiority; to receive one is a mark of subordination... He does not take part in public displays... He is open in his dislikes and preferences; he talks and acts frankly, because of his contempt for men and things... He is never fired with admiration, since there is nothing great in his eyes. He cannot live in complaisance with others, except it be a friend; complaisance is the characteristic of a slave... He never feels malice, and always forgets and passes over injuries... He is not fond of talking... It is no concern of his that he should be praised, or that others should be blamed. He does not speak evil of others, even of his enemies, unless it be to themselves. His carriage is sedate, his voice deep, his speech measured; he is not given to hurry, for he is concerned about only a few things; he is not prone to vehemence, for he thinks nothing very important. A shrill voice and hasty steps come to a man through care... He bears the accidents of life with dignity and grace, making the best of his circumstances, like a skillful general who marshals his limited forces with the strategy of war... He is his own best friend, and takes delight in privacy whereas the man of no virtue or ability is his own worst enemy, and is afraid of solitude.

To be mature is, we're told, to move beyond possessiveness. Jealousy is for babies. The mature person knows that no one owns anyone.

A wise man is superior to any insults which can be put upon him, and the best reply to unseemly behavior is patience and moderation.

For it is the part of a wise man to practice restrained good temper.

But my poor Saul, there’s no help for you, you’re heading straight for it. What about all those marvelous people we know, aged about fifty or sixty? Well, there are a few of them…marvelous, mature, wise people. Real people, the phrase is, radiating serenity. And how did they get to be that way? Well, we know, don’t we? Every blood one of them’s got a history of emotional crime, oh the sad bleeding corpses that litter the road to maturity of the wise, serene man or woman of fifty-odd! You simply don’t get to be wise, mature, etc., unless you’ve been a raving cannibal for thirty years or so.

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

Altogether it will be found that a quiet life is characteristic of great men, and that their pleasures have not been of the sort that would look exciting to the outward eye.

But no matter how much parents and grandparents may have sinned against the child, the man who is really adult will accept these sins as his own condition which has to be reckoned with. Only a fool is interested in other people's guilt, since he cannot alter it. The wise man learns only from his own guilt. He will ask himself: Who am I that all this should happen to me? To find the answer to this fateful question he will look into his own heart.

The mark of the immature man is that he wants to die nobly for a cause, while the mark of the mature man is that he wants to live humbly for one.

The mark of the immature man is that he wants to die nobly for a cause, while the mark of the mature man is that is wants to live humbly for one.

The decent man and the lover holds back even when he could obtain what he wishes. To win this silent consent is to make use of all the violence permitted in love. To read it in the eyes, to see it in the ways in spite of the mouth's denial, that is the art of he who knows how to love. If he then completes his happiness, he is not brutal, he is decent. He does not insult chasteness; he respects it; he serves it.

The maturity of man — that means, to have reacquired the seriousness that one had as a child at play

Good manners are an admission that everybody is so tender that they have to be handled with gloves. Now, human respect — you don't call a man a coward or a liar lightly, but if you spend your life sparing people's feelings and feeding their vanity, you get so you can't distinguish what should be respected in them.