市场是一位伟大的老师，但它收取高昂的学费。

Legal positivism emphasizes the separation of law and morality.

当你为自己的生活承担责任的那一刻，就是你开始改变它的那一刻。

Cheerfulness is the best promoter of health.

Truth is always to be found in simplicity, and not in the multiplicity and confusion of things.

I don't want to be perfect, I just want to be real.

挑战在于使不可见的东西变得可见。