As human beings, don't we need questions without answers as well as questions with answers, questions that we might someday answer and questions that we can never answer?
Never carry things on from the past. The past is gone. Every moment be rid of it, solved or unsolved. Drop it - and don't carry parts because those parts won't allow you to solve new problems that live in this moment. Live in this moment as totally as possible, and suddenly you will come to realized, that if you live it totally, it is solved. There is no need to solve it. Life is not a problem to be solved, it's a mystery to be lived.
We need a free economy not only for the renewed material prosperity it will bring, but because it is indispensable to individual freedom, human dignity and to a more just, more honest society.
Sometimes I just listen to classical pieces of music to take me away from my work. That's what I kind of do to wash away the notes that I've been working on all day. As human beings we need to sleep so that's kind of one of my little tricks.