I recently read a book about a person who was separated from her mother by death. Because my dad suffered from his disease last year too, my eyes are filled with tears as I turn the pages of the book. Though I have started a lot of research on human beings' diseases, until now I haven't found any regenerative mechanisms between disease and people being in pain. It's just a kind of luck, which means that we couldn't help having an illness. On the other hand, spending peaceful time with my dad gave me memorable moments, but I also had miserable thoughts about my dad living permanently with us.