我认为对古代好的东西要阐述奖惩,对现在好的东西要创造,不过是希望好的东西越来越多罢了。
Civilization as it is known today could not have evolved, nor can it survive, without an adequate food supply.
领导者的孤独是无法避免的。
成功只有在字典里才会出现在工作之前。
The probability of a response is determined by its reinforcement history.