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 tempera-mental predominance of courage over timidity,  of the appetite for adventure over the love of ease. This often exists in a man of 60 more than a boy of 20. 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 spring back to dust.

青春不是年華，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，炙熱的戀情；青春是生命的深泉在涌流。

青春氣貫長(zhǎng)虹，勇銳蓋過(guò)怯弱，進(jìn)取壓倒茍安。如此銳氣，二十后生而有之，六旬男子則更多見。年歲有加，并非垂老，理想丟棄，方墮暮年。

歲月悠悠，衰微只及肌膚；熱忱拋卻，頹廢必致靈魂。憂煩，惶恐，喪失自信，定使心靈扭曲，意氣如灰。