4、青年 Youth
Youth is not a time of life， it is a state of mind ; it is not rosy cheeks ， red lips and supple knees， it is a matter of the emotions : it is the freshness ; 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 a man of 60 more than a boy of 20 . Nobody grows old merely by a number of years . We grow old by deserting our ideals.
Years wrinkle the skin ， but to give up enthusiasm wrinkles the soul . Worry ， fear ， self –distrust bows the heart and turns the spirit back to dust .
Whether 60 of 16 ， there is in every human being ‘s heart the lure of wonders， the unfailing childlike appetite of what’s next and the joy of the game of living . In the center of your heart and my heart there’s a wireless station : so long as it receives messages of beauty ， hope ，cheer， courag