在青春年华的岁月里，我们追求自由、梦想、爱情，不断前行，探索未知的道路。而在这段美好的时光里，总有一些美文陪伴着我们成长，给我们带来力量和启示。今天我要分享的是一篇经典的青春美文——《youth》。
这篇美文的作者是英国的诗人和艺术家萨缪尔·泰勒·柯勒律治，他于1820年创作了这首诗，并收录在他的诗集《边境球赛集》中。这篇美文以清新简洁的语言描绘了青春无惧的精神和不断向前的进取心，它已经成为了许多人的青春经典。
以下是《youth》的原文：
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.
When the aerials are down, and your spirit is covered with snows of cynicism and the ice of pessimism, then you are grown old, even at twenty, but as long as your aerials are up, to catch the waves of optimism, there is hope you may die young at eighty.
这篇美文表达了许多值得我们学习和思考的东西。首先，青春不是指时间的长短，而是一种心态。它不在于拥有红润的脸颊、红唇和柔软的膝盖，而在于意志力、想象力和情感的活力，是生命深处的清新之泉。
同时，青春也意味着勇气战胜胆怯、冒险精神战胜安逸。这种精神并不是年龄所能划分的，没有人会因为年龄增长而老去，只有当我们放弃自己的理想时才真正变老。
此外，这篇美文还鼓励我们始终保持心中对美好、对生活的向往，保持乐观的态度。正如文章中所说，无论是六十岁还是十六岁，每个人的内心都充满了对未来的向往和游戏人生的欢乐。只要我们的内心保持着对美、希望、快乐、勇气和力量的期待，我们便永远年轻。
总之，这篇美文清新简洁，表达了青春美好、追求理想和乐观向上的精神，它告诉我们，永葆青春的秘密在于，始终保持勇气、对未来充满期待、乐观进取的心态。我们应该用这种精神来定义我们的青春，为自己的人生增添更多的色彩和意义。