青春，并非年轻岁月，而是一种心态；青春的特徵，并非粉颊、朱唇、柔肢，而是毅力、激情、创意；青春是生命涌泉的清澈、激扬。
青春，是指超越怯懦、勇气贯长虹，不图安逸、敢闯敢试。毅力若此，花甲多胜弱冠。年岁递增，非必老化；背弃理想，方陷残年。
岁月留痕，只及肌肤；但激情不再，枯皱始达心灵。忧愁、惶恐、自卑，终致身心佝僂、精神萎靡。
无论年少或年长，当怀好奇的诱导，像孩子般总渴求着：接下来的进展及驰骋人生的欢乐。
人人皆有心灵的感官，只要感受源源来自人间与穹苍的啟发，感应有关美好、希望、激情、勇毅和能力的信息，你就会朝气勃勃、青春无限。
《YOUTH》by Samuel Ullman (Excerpt) Source: http://www.uab.edu/ullmanmuseum/
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 a matter of the will, a quality of the imagination, a vigor of the 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 a man of sixty more than a boy of twenty. Nobody grows old merely by a number of years. We grow old by deserting our ideals.
Years may 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 sixty or sixteen, there is in every human being's heart the lure of wonder, the unfailing child-like appetite of what's next, and the joy of the game of living. In the center of your heart and my heart there is a wireless station; so long as it receives messages of beauty, hope, cheer, courage and power from men and from the infinite, so long are you young.
译者按：【青春】(1917) 近百年来拨动了不少人的心弦。花落春犹在，许多中老年人把它当為安排后半生的精神支柱。二战后，由於麦克阿瑟将军喜爱此文、且在日本政要界有庞大的影响力，很快就使此文风靡了日本， 成為重建家园、重塑民生的精神动力。松下电器的创始人松下幸之助数十年一直把【青春】当作自己的座右铭。韩国前总统金大中在他70多岁的成功竞选中，曾引用此文。美国前总统克林顿将其视為座右铭，摆放在办公桌玻璃下面。此文已被翻译成数十种语言。