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"?

Success is not a destination, but a process of continuous improvement.

沉默比言语说得更多，但必须懂得倾听。

The weight of evidence for an extraordinary claim must be proportioned to its strangeness.

The essence of cryptography is to allow communication in the presence of adversaries.

We are all in the gutter, but some of us are looking at the stars.

可持续性不是一种选择；它是负责任农业的唯一前进道路。