算法设计既是一门艺术也是一门科学。
The design of algorithms is both an art and a science.
心理学必须是一门纯粹描述性的科学。
"I think it should be called a lie because a pig is not like a day and people do not have skeletons in their cupboards."
受过教育的心灵的标志是能够思考一种思想而不必接受它。