荀子所说的“伪”，是“人为”的意思。天生就有的是“性”，是人力无法改变的；通过后天的学习、努力可以改变的，就是“伪”。所以荀子主张“化性起伪”，通过自己能掌控的力量来改变已成定数的东西。

Only by continuous learning can we make continuous progress.

钓鱼的人躬着身子，不是要对鱼恭恭敬敬；用虫子作为诱饵捕鼠，也不是因为喜爱老鼠。

我不觉得有义务相信，那位赋予我们感官、理性和智力的上帝，会希望我们放弃使用它们。

So given a Time Turner, I would tell my 21-year-old self that personal happiness lies in knowing that life is not a check-list of acquisition or achievement. Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone’s total control, and the humility to know that will enable you to survive its vicissitudes.