"腐蚀青年的最可靠方法是教他更高地评价那些与他意见一致的人而不是那些与他意见不同的人。"

Simplified Meaning:

When young people are taught to value those who agree with them more than those who have different opinions, their minds stop growing. Imagine a classroom where everyone always agrees with the teacher without question. The students might never learn to think for themselves or understand different ideas. Real learning happens when people discuss and even debate different points of view. This helps them see the world in new ways and develop their own thoughts. In history, societies that encouraged open discussion and debate, like ancient Athens, often advanced in knowledge and culture. On the other hand, places that punished differing views, like during certain times in medieval Europe, tended to become stagnant. By embracing different perspectives, young people become more open-minded, creative, and capable of solving problems. This approach helps them succeed in real life, where they will encounter many different kinds of people and ideas.