"知識の進歩と普及こそが真の自由の唯一の守護者である。"

Simplified Meaning:

For people to be truly free, they need to have access to knowledge. This means that when we learn more and share what we know with others, it's easier to make good decisions and avoid being controlled by those who might try to deceive or oppress us. Think about how important education is in history; for instance, during times when people were denied the right to read, they were easily manipulated because they couldn't inform themselves. Consider a modern example: if you know a lot about how the government works, it's harder for someone to lie to you about your rights or how laws are made. Sharing this knowledge strengthens the whole community because everyone can make more informed choices. So, continuing to learn and teaching others helps keep our freedoms secure. Essentially, staying curious and informed are key to protecting our freedoms.