To think, when one is no longer young, when one is not yet old, that one is no longer young, that one is not yet old, that is perhaps something.
Sentiment: NEGATIVE
When you're young, you don't especially think of yourself as being young. You're just alive and everything's interesting and you don't think of things in terms of age because you're not conscious of it.
Youthfulness is connected to the ability to see things new for the first time. So if your eyes still look at life with wonder, then you will seem young, even though you may not be chronologically young.
Nothing makes one old so quickly as the ever-present thought that one is growing older.
Thinking no longer means anymore than checking at each moment whether one can indeed think.
Age is inevitable. Aging isn't.
You make me chuckle when you say that you are no longer young, that you have turned twenty-four. A man is or may be young to after sixty, and not old before eighty.
Paradoxical as it may seem, to believe in youth is to look backward; to look forward we must believe in age.
A young man is a theory, an old man is a fact.
Age is whatever you think it is. You are as old as you think you are.
Youth is not a question of years: one is young or old from birth.