Practice is absolutely necessary. You may sit down and listen to me by the hour every day, but if you do not practice, you will not get one step further. It all depends on practice.
The process of finding the truth may not be a process by which we feel increasingly better and better. It may be a process by which we look at things honestly, sincerely, truthfully, and that may or may not be an easy thing to do.
I never buy anything unless I can fill out on a piece of paper my reasons. I may be wrong, but I would know the answer to that ...I'm paying $32 billion today for the Coca Cola Company because... If you can't answer that question, you shouldn't buy it. If you can answer that question, and you do it a few times, you'll make a lot of money.
Man ... can go up against gravitation in a balloon, and why should he not hope that ultimately he may be able to stop or accelerate his drift along the Time-Dimension, or even turn about and travel the other way.