心理学家必须是一个中立的观察者。
The psychologist must be a neutral observer.
The complexity of the nervous system is both a challenge and an inspiration.
Let us try to teach generosity and altruism, because we are born selfish.
The context is the starting point of any project.
别哭了，我很抱歉，你一定要明白，我很抱歉骗你这么多，但生活就是如此。
诗是一个内在的形象，它浮现为文字。
The beauty of mathematics is that it is both an art and a science.