We are all the sum of our memories.
The power of abstraction is crucial in computer science, allowing us to focus on the essential aspects of a problem.
如果一件事情自己都没有搞明白，又怎么能去教导别人，让别人明白呢？
Psychology is the science of mental life in its adaptive relations.
The right of nature...is the liberty each man hath to use his own power as he will himself for the preservation of his own nature.