"偏見はよく知られているように教育によって土壌が緩められたり肥沃にされたりしていない心から根絶することが最も難しい。"

Simplified Meaning:

When people hold onto strong, unfair beliefs about others, it is very hard to change their minds if they haven't been exposed to new ideas or learning. Imagine trying to grow a plant in hard, dry soil. It won't grow well because the soil needs to be soft and rich with nutrients for the plant to thrive. Similarly, a mind that hasn't been opened up to different cultures, experiences, and knowledge is like that hard soil. For instance, someone who has never traveled or met people from different backgrounds might find it difficult to understand and accept others because they haven't learned much about them. Learning and education are like water and fertilizer for the mind, helping people grow and change their viewpoints. To improve as individuals, it's important to keep learning and stay curious about the world.