Collaboration is essential in science—no one does it alone.

我不是一个完美的人，我从未声称自己是。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

追求知识是一场没有终点的旅程，而这正是它令人兴奋的地方。