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 60 more than a boy of 20 .

Nobody grows old merely by a number of years .

We grow old by deserting our ideals.

    
青春意味着性情的优越，

勇气驱走怯懦，

冒险战胜苟安。

二十岁有之，六十岁则更常见。

岁月有加，并非垂老；

理想泯灭，暮年即至。