"The important thing is not to stop questioning. Curiosity has its own reason for existing." I think this quote means exactly what it says. To be curious of your surroundings and to have loads of questions are fine. Encouraged even. I could apply this in life by asking questions when I have them, instead of holding back. I am not exactly sure that asking someone plenty of questions would exactly make their mood change. It could make an impact on the world because if people asked questions, problems could be answered.