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 body 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 ofbeauty, hope, cheer, courage and power from men and from theInfinite, so long are you young.
By Samuel Ullman
青春不是年华，而是心境；青春不是桃面、丹唇、柔膝，而是深沉的意志、恢宏的想像、炽热的感情；青春是生命的深泉涌流。
青春气贯长虹，勇锐盖过怯弱，进取压倒苟安。如此锐气，二十后生有之，六旬男子则更多见。年岁有加，并非垂老；理想丢弃，方堕暮年。
岁月悠悠，衰微只及肌肤；热忱抛却，颓唐必致灵魂。忧烦、惶恐、丧失自信，定使心灵扭曲，意气如灰。
无论年届花甲，抑或二八芳龄，心中皆有生命之欢愉，奇迹之感召，孩童般天真久盛不衰。
一旦心海枯竭，锐气便被冰雪覆盖，玩世不恭、自暴自弃油然而生，即使年方二十，实已垂垂老矣；然则只要虚怀若谷，让喜悦、达观、仁爱充盈其间，你就有望在八十高龄告别尘寰时仍觉年轻。
翻译:王佐良