19.Samuel Ullman:Youth is not a time of life;it is a state of mind;it is not a matter a ripe rosy cheeks,red lips and supple knees;it is a temper of will ,a quality of imagination, a vigor of the emotions;it is the freshness of the deep springs of life.青春不是生命的一段時期,而是一種心智的狀態;它不是成熟的玫瑰色的臉頰,紅潤的嘴唇和靈活的雙膝,而是一種堅強的意志,優越的想像力,充沛的感情;它是生命泉源的勃勃生氣。 - 烏爾曼
16.Life does not consist mainly—or even largely—of facts and happenings. It consists mainly of the storm of thoughts that is forever blowing through one’s head.