Love is not only a sentiment, it is an art.

研究古DNA就是与逝者对话。

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.

 The tranquility of the soul is the greatest wealth.