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. 青春不是芳华年少，而是一种心境；青春不是桃花红颜、盈盈朱唇、轻柔体态，而是积极的心志，丰富的想象，炙热的感情。（塞缪尔）
