The best discoveries are those that raise more questions than they answer.

你必须对你所做的事情充满热情，否则你永远不会出类拔萃。

When obedience ceases to be an irritant and becomes our quest, in that moment God will endow us with power.

The probability of a response is determined by its reinforcement history.

憎恨罪行，但要爱罪人。