"I think one possibility [in the future] might be chemotherapy. And I'm always hesitant to say that because it makes it sound like I'm against chemotherapy. Right now, chemotherapy is the best cancer treatment therapy we have. But let's say we find some way where we can almost genetically engineer the DNA of our being and fight cancer that way. Then, the idea that we used to pump poison into people to fight off cancer will almost seem like the use of leeches or something."