Philosophy is not a doctrine but an activity.
哲学不是一种学说，而是一种活动。
Science is a tool for empowerment, not control.
一个被正确提出的问题等同于已经解决了一半。
科学家之间的合作是解决复杂问题的关键。
The thrill of discovery never gets old.
The first step in liquidating a people is to erase its memory. Destroy its books, its culture, its history. Then have somebody write new books, manufacture a new culture, invent a new history. Before long the nation will begin to forget what it is and what it was.