"Would you like to know by personal experience of these things? You can, if you will obey the law and follow the rules. Ah, yes, the same old stumbling-blocks - laws and rules! But such is Nature's way. There's the rub: obeying rules and following studies. And yet is it not everywhere the same in life? You can't even run an automobile without learning how to do it. How can you work a problem without learning the rules for its solution? How can you practise chemistry without having studied the science?"