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.
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,恢宏的想象,炙热的感情;青春是生命的深泉在涌流。
Youth by Samuel Ullman