Youth is not a time of life; it is a state of mind.
It is not a matter of rosy cheeks, red lips and supple knees;
It is matter of will, a quality of imagination, a vigor of emotions;
It is the freshness of the deep springs of life.

Youth means a temperamental predominance of courage over timidity,
Of the appetite for adventure over the love of ease.
This often exists in an adult of sixty more than a child of twenty.
Nobody grows old merely by a number of years.
We grow old by deserting our ideals.

Sam Ullman