"I work very slowly. It's a process of building up layers and adjusting until it feels right."

The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.

动物健康的未来在于预防，而不仅仅是治疗。

统计学家不能推卸责任，必须清楚地理解科学推断的原则。