Once something is a passion, the motivation is there.
统计学中最重要的不是数字,而是产生这些数字的方法及其背后的意义。
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.