The concept of legal validity is crucial for understanding the nature of law.

The best architecture comes from a synthesis of all the elements that separately comprise a building: the structure that holds it up; the services that allow it to function; the ecology of the building - its relationship to the surroundings; the quality of natural light; the symbolism of the form; the relationship of the building to the skyline.

人的本性是恶的，那些善良的行为是人为的。

The future of energy lies in the integration of traditional and renewable sources. We must adapt and lead this transition.

数学不是一项观赏性运动。

我要做我想做的事。我要成为真正的自己。我要弄清楚那是什么。

渔业资源的保护不是选择题，而是必答题。