46、心灵中的黑暗必须用知识来驱除。

The darkness of the mind must be dispelled with knowledge.

47、学习知识要善于思考，思考，再思考，我就是靠这个方法成为科学家的。

Learning knowledge needs to be good at thinking, thinking and rethinking. That's how I became a scientist.

48、人的知识是力量，青年应当是知识上很有力量的人。

People's knowledge is power, and young people should be people with strong knowledge.

49、一个人必须学习与自己不同类型的人相处，不然生活何其孤苦。

A person must learn to get along with different kinds of people, otherwise life is so lonely.

50、我们可以由读书搜集知识，但必须利用思考把糠和麦子分开。