"Home is not a place, it's a feeling."

The rule, or measuring rod, which the behaviorist puts in front of him always is: Can I describe this bit of behavior I see in terms of "stimulus and response"?

长期来看，风险与收益相关，但短期内未必如此。

世间万物不可能都完美无缺，可怜那些执着的人总是被忧愁困扰。

奶牛养殖既是一门艺术也是一门科学——尊重两者对于成功至关重要。

追逐梦想永远不会太晚。