It is the greatest happiness of the greatest number that is the measure of right and wrong.

生活是一系列的时刻，有些明亮，有些黑暗，但都是必不可少的。

DNA分子是所有生命的基础，理解它就是理解生命本身。

The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.

Every challenge in life is an opportunity to grow and become stronger.

预测未来的最好方法就是去创造未来。

我认为我今天之所以成为我，是因为年轻时经历了那些艰难时期。

幽默是与孩子建立联系的最佳方式。