The city is a school, and its buildings are the teachers.

Ignorance more frequently begets confidence than does knowledge.

One can't proceed from the informal to the formal by formal means.

The real challenge is not just building climate models, but interpreting what they tell us.

自由的代价是愿意在任何地方、任何时间、以完全不计后果的方式进行突然的战斗。

The most important quality for a researcher is persistence.

魔法的本质既非善也非恶，而是使用它的人的本质。