How do you interpret this?

sounds like a man who believes ignornce is bliss!

for me its another way of saying "with great power comes with great responsibilities.." just like in the movie Ü

By knowledge & Wisdom one knows or understand sorrow & grief. A mentally ill person never know sorrow & grief

this is just my own personal opinion and how I understand it. most of the time if we are educated and very much literate we then to know almost everything and we knew the good and the bad side of a certain thing so if we fail it will cost us so much pain one. for example we only earn 500 in a month that you can survive coz you will tend to meet ends, and since you are hard worker and was able to build network you now earn 3 times than before so your needs increases so as there will now be more complications in life. but on the other side those who were gifted with much wisdom can experience much pains in life for God knows they can survive those pains

The more you learn the more you get paranoid.