Three types of person are unable to learn:
- The upside-down pot:
If you are totally content with who you are, then you will have no desire to learn.
- The defiled pot:
You may desire to learn, but your bad habits prevent you from progressing in thought. You will be like an imperfect mirror that distorts an image.
- A pot with holes:
You may have intelligence and a keen desire to learn, but your motivation is weak. Without a powerful motivation there is no concentration, and without concentration there is no assimilation or memory.